import java.util.Scanner;
public class Helloworld
{
    public static void main(String[] args)
    {
        System.out.println("请输入月份：\n");
        Scanner in=new Scanner(System.in);
        int month;
        month=in.nextInt();
        switch(month)
        {
            case 3:
            case 4:
            case 5:
                System.out.println("春季");
                break;
            case 6:
            case 7:
            case 8:
                System.out.println("夏季");
                break;
            case 9:
            case 10:
            case 11:
                System.out.println("秋季");
                break;
            case 12:
            case 1:
            case 2:
                System.out.println("冬季");
                break;
            default:
                System.out.println("你输入的月份不存在，请重新输入。");
                break;
        }
    }
}