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