#include <stdio.h>
#include <stdlib.h>

int main()
{
    int year;
    printf("请输入年份: ");
    scanf("%d",&year);
    if(year%400==0)
        printf("%d年是闰年!",year);
    else{
        if(year%4==0&&year%100!=0)
            printf("%d年是闰年!",year);
        else
            printf("%d年不是闰年!",year);
            
    }
    return 0;
    
}