汽水瓶(java)

解题思路:

注意事项:

参考代码:

import java.util.Scanner;

public class Main {

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

while (true) {

int n = sc.nextInt();

int count = 0;

if (n == 0) {

break;

}

while (true) {

if (n >= 3) {

count += n / 3;

n = n / 3 + n % 3;

} else if (n == 2) {

count++;

System.out.println(count);

break;

} else {

System.out.println(count);

break;

}

}

}

}

}