poj2234--Matches Game

 1 #include<iostream>
 2 #include<cstdio>
 3 #include<cstring>
 4 #include<cmath>
 5 #include<string>
 6 #include<algorithm>
 7 int n;
 8 int main(){
 9     while (~scanf("%d",&n)){
10         int s=0,x=0;
11         for (int i=1;i<=n;i++){
12             scanf("%d",&x);
13             s^=x;
14         }
15         if (s>0) printf("Yes\n");
16         else printf("No\n");
17     }
18 }