#include<bits/stdc++.h>
using namespace std;
int main()
{	
    int y,n;
    cin>>y>>n;
    int f;
    if(y%4!=0) f = 29;
    else if(y%100==0)
	{
		if(y%400==0) f = 29;
		else f = 28;
	}
	else f = 29;
	if(n == 1){
	    cout<<"31";
	}if(n == 2){
	    cout<<f;
	}if(n == 3){
	    cout<<"31";
	}if(n == 4){
	    cout<<"30";
	}if(n == 5){
	    cout<<"31";
	}if(n == 6){
	    cout<<"30";
	}if(n == 7){
	    cout<<"31";
	}if(n == 8){
	    cout<<"31";
	}if(n == 9){
	    cout<<"30";
	}if(n == 10){
	    cout<<"31";
	}if(n == 11){
	    cout<<"30";
	}if(n == 12){
	    cout<<"31";
	}
	return 0;
}