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