#include "bits/stdc++.h"
#include<unordered_map>
#include<unordered_set>
#pragma warning(disable:4996)
using namespace std;
using ld = long double;
const ld eps = 1e-9;

//// < "d:\d_download\visual studio 2015\projects\programing_contest_c++\debug\a.txt" > "d:\d_download\visual studio 2015\projects\programing_contest_c++\debug\b.txt"


int main() {
	int N; cin >> N;
	long long int sum = 0;
	for (int i = 0; i < N; ++i) {
		int a; cin >> a; sum += a;
	}
	cout << sum / N << endl;
	return 0;
}