闰年

#include <stdio.h>
int main() {
    int year;
   
    printf("input a number less than 3000\n");
    scanf("%d", &year);
   
    if((year % 100 !=0&&year % 4 == 0)||year % 400 == 0){printf("YES");}
    else{printf("NO");}
   
    return 0;
}