#include <iostream>
using namespace std;
int main() {
    int year,month;
    cin>>year>>month;
    
    int days[]={31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
    bool a=false;
    if ((year%400==0)||(year%4==0&&year%100!=0)){
        a=true;
    }
    if(month==2&&a) {
        cout<<29<<endl;
    }else{
        cout<<days[month-1]<<endl;
    }    
    return 0;
}