题解 | #汽水瓶#

看到大神解法

确实2瓶换一瓶，毕竟换后那一瓶归还老板就相当于抵消了

import java.util.*;

public class Main{
    public static void main(String args[]) {
        Scanner sc = new Scanner(System.in);
        while(sc.hasNextInt()) {
            int n = sc.nextInt();
            if (n == 0){
                break;
            }else
                System.out.println(n/2);
        }
    }
}