01-Leap Year-code marshal.

#include<stdio.h>
int main()
{
    int year;
    scanf("%d",&year);
    if(year%400==0)
    {
        printf("YES\n");
    }
    else if(year%100==0)
    {
        printf("NO\n");
    }
    else if(year%4==0)
    {
        printf("YES\n");
    }
    else
        printf("NO\n");
    return 0;
}