#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}

#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}#include using namespace std;

int main() { long long x, y; cin >> x >> y;

auto compute = [x, y](long long k) {
    return (y / k) - ((x - 1) / k);
};

long long count_7 = compute(7);

long long count_14 = compute(14);
long long count_21 = compute(21);
long long count_35 = compute(35);

long long count_42 = compute(42);
long long count_70 = compute(70);
long long count_105 = compute(105);
long long count_210 = compute(210);

long long sum_single = count_14 + count_21 + count_35;
long long sum_double = count_42 + count_70 + count_105;
long long sum_triple = count_210;

long long exclude = sum_single - sum_double + sum_triple;
long long result = count_7 - exclude;

cout << result;

return 0;

}

是人是修勾？