hdu 1849 Rabbit and Grass

#include<iostream>
#include<stdio.h>
using namespace std;
int main(){
int m,a[1100],i,sum;
while(~scanf("%d",&m)){
sum=0;
if(m==0)
break;
for(i=0;i<m;i++){
scanf("%d",&a[i]);
sum^=a[i];
}
if(sum==0)
printf("Grass Win!\n");
else
printf("Rabbit Win!\n");
}
return 0;
}