#include<stdio.h>
int main()
{
    int year;
    scanf("%d\n",year);
    if(year%4==0&&year%400==0)
    {
        printf("Leap year");
    }
    else if(year%100==0)
    {
        printf("Not a leap year");
    }
    else
    {
        printf("Not a leap year");
    }
    return 0;
}