#include<bits/stdc++.h>
using namespace std;
int a[15] = {0,31,28,31,30,31,30,31,31,30,31,30,31};
int main() {
	long long x,y;
	cin >> x >> y ;
	if(x % 4 != 0 || (x % 100 == 0 && x % 400 != 0)) {
		cout<<a[y];
	}
	else {
		if(y != 2) cout<< a[y] ;
		else cout<< 29 ;
	}
}