11111

#include <bits/stdc++.h>
using namespace std;
int main(){
int y,m;
cin >> y >> m;
if (y % 4 == 0 && y % 100 != 0 || y % 400 == 0){
if (m == 2){
cout << 29;
}
}else{
if (m == 1 || m == 3){
cout << 31;
}else if (m == 2){
cout << 28;
}else if (m == 5 || m == 7){
cout << 31;
}else if (m == 8 || m == 10){
cout << 31;
}else if (m == 12){
cout << 31;
}else if (m == 4 || m == 6){
cout << 30;
}else{
cout << 30;
}
}
return 0;
}