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