#include<bits/stdc++.h> using namespace std; int main() { int n,m; cin>>n>>m; if(n%40&&(n%100!=0||n%4000)){ if(m1||m3||m5||m7||m8||m10||m12){ cout<<"31"; } if(m4||m6||m9||m11){ cout<<"30"; } if(m2){ cout<<"29"; } } else{ if(m1||m3||m5||m7||m8||m10||m12){ cout<<"31"; } if(m4||m6||m9||m11){ cout<<"30"; } if(m2){ cout<<"28"; } } return 0; }