hdu_1564: Play a game

题目链接

看n的奇偶性，题解参见kuangbin的博客 http://www.cnblogs.com/kuangbin/archive/2013/07/22/3204654.html

#include<iostream>
using namespace std;

int main(){
    int n;
    while(cin>>n && n)
        puts(n&? ");
}