import java.util.Scanner;
public class test3 {public static void main(String[] args) {Scanner scan = new Scanner(System.in);System.out.print("请输入年月:");int year = scan.nextInt();if (year % 4 == 0 && year % 100 != 0) {System.out.print("恭喜! 它是闰年!");} else if (year % 400 == 0) {System.out.print("恭喜! 它是闰年!");} else {System.out.print("不好意思,它不是闰年.");}}
}