import java.util.Scanner;

public class LeapYear1 {
    
    public static boolean isleapyear(int year) {
        return (year%4==0&&year%100!=0)||year%400==0 ?  true:false;
    }

    public static void main(String[] args) {
        
        Scanner sc = new Scanner(System.in);
        
        System.out.println("请输入一个年份：");
        int year;
        while(sc.hasNext()) {
            year = sc.nextInt();
            if(year<0)
                System.out.println("输入的年份有误！");
            else {
                System.out.println(year+"年"+(isleapyear(year) ? "是闰年":"是平年"));
            }
        }sc.close();
    }
}