P5707

很玄学，怎么说呢。

import java.util.Scanner;

/**
 * @author suystar_bg
 * */
public class Main{
    public static final Scanner sc = new Scanner(System.in);

    private static String castClock(int hour,int minute){
        String result = "";
        String piece_hour,piece_minute;
        if (hour / 10 % 10 == 0){
            piece_hour = "0" + hour;
        }else{
            piece_hour = String.valueOf(hour);
        }
        if (minute / 10 % 10 == 0){
            piece_minute = "0" + minute;
        }else{
            piece_minute = String.valueOf(minute);
        }
        result = piece_hour + ":" +piece_minute;
        return result;
    }
    public static void main(String[] args) {
        int s,v;
        s = sc.nextInt();
        v = sc.nextInt();
        int t = s / v + 10;
        int n = 32 * 60;
        n -= t;
        if (n >= 24 * 60){
            n -= 24 * 60;
        }
        System.out.println(castClock(n / 60,n % 60));



    }
}

注意这一句代码

System.out.println(castClock(n / 60,n % 60));

我对我castClock方法 - 1 记录如下:

https://www.luogu.com.cn/record/159092569

可以看到有一个点WA了，然后我如果对castClock方法不-1，记录如下：

https://www.luogu.com.cn/record/159092717

WA的那个点AC了？求大神调代码