#include<iostream>
using namespace std;

int y,m;
int q[]={0,31,28,31,30,31,30,31,31,30,31,30,31};

int main()
{
	cin>>y>>m;
	if(y%4==0 && y/100!=0 || y%400==0)
		q[2]=29;
	   cout<<q[m];
}