#include<iostream>
#include<conio.h>
using namespace std;
int main()
{
	int y;
	cout<<"Enter year	:	";
	cin>>y;
	if(y%4==0)
	{
		if(y%100==0)
		{
			if(y%400==0)
				cout<<"leap year";
			else
				cout<<"not leap year";
		}
		else
			cout<<"leap year";
	}
	else
		cout<<"not leap year";
	return 0;
}