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