题解 | #汽水瓶#

实现思路：两空瓶能换一瓶汽水，这是最小换算单位，所以直接除以2

import java.util.Scanner;

/**
 * @author saint
 * @date 2022/5/31
 * @info 空瓶子换饮料
 **/
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while (sc.hasNextInt()){
            int num = sc.nextInt();
            if(num <= 0){
                break;
            }
            System.out.println(num/2);
        }
    }
}