#include <bits/stdc++.h>
using namespace std;
int main()
{
    int a,b;
cin>> a>>b;
    if(b==1 || b==3||b==5||b==7||b==8||b==10||b==12){
        cout<<"31"<<endl;
    }else if(b==4||b==6||b==9||b==11){
        cout<<"30"<<endl;
    }else{
        if(a%4==0 && a%100!=0||a%400==0){
            cout<<"29"<<endl;
        }else{
            cout<<"28"<<endl;
        }
     
    }
return 0;
 
}
/**************************************************************
	Problem: 2096
	User: huanglingkai
	Language: C++
	Result: Accepted
	Time:14 ms
	Memory:2072 kb
****************************************************************/