#include<stdio.h>
int main()
{
    int a;
    if(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;
}