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