题解 | 四季

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        // 注意 hasNext 和 hasNextLine 的区别
        while (in.hasNextInt()) { // 注意 while 处理多个 case
            int data = in.nextInt();
            String jijie = "num";
            if( data / 100000 > 0 && data / 100000 < 10){
                int m = data - ( data / 100 ) * 100 ;
                if( m == 1 || m == 2 || m == 12){
                    jijie = "winter";
                }else if( m == 3 || m == 4 || m == 5){
                    jijie = "spring";
                }else if( m == 6 || m == 7 || m == 8){
                    jijie = "summer";
                }else{
                    jijie = "autumn";
                }
                System.out.printf("%s",jijie);
            }else{
                System.out.print("no use");
            }
            
        }
    }
}