#include <iostream>

using namespace std;

int main(int argc, char** argv) {
	int a,b;
	cin>>a>>b;
	if(a%4==0&&b==2)
	{
		cout<<"29";
	}
	if(a%4!=0&&b==2)
	{
		cout<<"28";
	}
	if(b!=2)
	{
		if(b==1)
		{
			cout<<"31";
		}
		if(b==3)
		{
			cout<<"31";
		}
		if(b==4)
		{
			cout<<"30";
		}
		if(b==5)
		{
			cout<<"31";
		}
		if(b==6)
		{
			cout<<"30";
		}
		if(b==7)
		{
			cout<<"31";
		}
		if(b==8)
		{
			cout<<"31";
		}
		if(b==9)
		{
			cout<<"30";
		}
		if(b==10)
		{
			cout<<"31";
		}
		if(b==11)
		{
			cout<<"30";
		}
		if(b==12)
		{
			cout<<"31";
		}
	}
	return 0;
}