hdu 1849 Rabbit and Grass 博弈论

水题，转化Nim

代码如下：

 #include<iostream>
 #include<stdio.h>
 #include<algorithm>
 #include<iomanip>
 #include<cmath>
 #include<cstring>
 #include<vector>
 #define ll __int64
 #define pi acos(-1.0)
 #define MAX 50000
 using namespace std;
 int m,t,ans;
 int main(){
     while(scanf("%d",&m)&&m){
         ans=;
         while(m--){
             scanf("%d",&t);
             ans^=t;
         }
         puts(ans==?"Grass Win!":"Rabbit Win!");
     }
     return ;
 }