#include<iostream>
#include<cstdio>
#include<algorithm>
#include<climits>
#include<string>
#include<vector>
#include<list>
#include<map>
#include<set>
#include<cmath>
#include<queue>
#include<cstring>
#include<stack>
#include<functional>
using namespace std;
#define int long long

signed main(){
	int N,V,sum=0;
	cin>>N;
	for(int i=0;i<N;i++){
		cin>>V; sum += V;
	}
	if(N==0) puts("0");
	else printf("%lld\n",sum/N);
	return 0;
}