hdu 5364 /BC 50A Distribution money

#include <iostream>
#include <cstring>
#include <string>
#include <cstdio>
#include <cmath>
#include <algorithm>
#include <vector>
#include <queue>
#include <map>
#include<set>
#include<stack>
#define bug puts("bugbugbug");
using namespace std;
typedef long long ll;
int visit[10005];
int main()
{
    int n;
    while(~scanf("%d",&n))
    {
        int flag=-1;
        memset(visit,0,sizeof(visit));
        for(int i=0;i<n;i++)
        {
            int a;
            scanf("%d",&a);
            if(++visit[a]>n/2)
                flag=a;
        }
        printf("%d\n",flag);
    }
}