#include <bits/stdc++.h> using namespace std; int main() { int y,m; cin>>y>>m; if(m2) if((y%40&&y%100!=0)||y%400==0)cout<<"29"; else cout<<"28"; switch(m) {case 1: case 3: case 5: case 7: case 8: case 10: case 12: cout<<"31";break; case 4: case 6: case 9: case 11:cout<<"30";break; }

return 0;

}