#include<bits/stdc++.h>
#define rep(i,n)for(int i=0;i<n;i++)
using namespace std;
typedef long long ll;

int main() {
	int n; cin >> n;
	ll sum = 0;
	rep(i, n) {
		ll v; cin >> v;
		sum += v;
	}
	cout << sum / n << endl;
}