#include<bits/stdc++.h> #define int long long using namespace std; int y,m; signed main(){ cin>>y>>m; if(m1||m3||m5||m7||m8||m10||m12) cout<<31; else if(m4||m6||m9||m11) cout<<30; else{ if(y%40) cout<<29; else cout<<28; }

return 0;

}