#include <iostream>
using namespace  std;
int days[13] = {0,31,28,31,30,31,30,31,31,30,31,30,31};
int main(){
    int y , m;
    cin >> y >> m;
    if(y % 400 == 0 || ( y %4 == 0 && y % 100 != 0 ) ){
        days[2] = 29;
    }
    cout << days[m];
}