hdu 1850 Being a Good Boy in Spring Festival

http://acm.hdu.edu.cn/showproblem.php?pid=1850

#include<iostream>
#include<cmath>
#include<string>
#include<algorithm>
#include<cstring>
#include<cstdio>

using namespace std;
int a[105];
int main()
{
int n;
while(cin>>n)
{
if(n==0)
break;
int sum=0;
for(int i=1;i<=n;++i)
{
cin>>a[i];
sum=sum^a[i];
}
int ans=0;
for(int i=1;i<=n;++i)
{
if(a[i]>(sum^a[i]))
++ans;
}
cout<<ans<<endl;
}
return 0;
}