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