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1 #include<bits/stdc++.h> using namespace std; int main(){ int a,b,s=0; cin>>a>>b; for(int i=a;i<=b;i++){ if(i%2==0){ s++; } } cout<<s; return 0; } 2 #include<bits/stdc++.h> using namespace std; int main(){ for(int i=1;i<=26;i++){ cout<<(char)(i+64)<<" "; } cout<<"\n"; for(int i=1;i<=26;i++){ cout<<(char)(i+96)<<" "; } return 0; }
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- 一本通编程启蒙
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- 区间类动态规划
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