蓝桥杯2015年第六届真题-饮料换购

蓝桥杯2015年第六届真题-饮料换购

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 scanner=new Scanner(System.in);

        int n=scanner.nextInt();

        int s=n,i=0;

        while(true){

            i=n%3;

            s=s+n/3;

            n=n/3+i;

            if(n/3==0)break;

        }

        System.out.println(s);

    }

}