2095 find your present (2)

#include<iostream>#include<map>#include<cstdio>using namespace std;int main(void){    int n;    int temp;    map<int,int> m;    while(scanf("%d",&n)!=EOF)    {        if(n==0)        {            break;        }        m.clear();        for(int i=0;i<n;i++)        {            scanf("%d",&temp);            m[temp]++;        }        for(map<int,int>::iterator it=m.begin();it!=m.end();it++)        {            if(it->second%2!=0)            {                cout<<it->first<<endl;            }        }    }    return 0;}