题解 | 买橘子

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
            int a = in.nextInt();
            for(int i = a/8 ; i>=0 ; i--){
                int left = a - i * 8;
                if (left >= 0 && left % 6 == 0) {
                    System.out.println(i + left / 6);
                    return ;//直接结束
                }
            }
        System.out.println(-1);
    }
}