#include <stdio.h>
int main() {
int year;
scanf("%d", &year);
if((year % 100 != 0 && year % 4 == 0)||year % 400 == 0){
printf("YES");}
else
{ printf("NO");
}
return 0;
}
原文：https://www.cnblogs.com/p201821440044/p/10507382.html