#include <iostream>
#include <string>
#include <algorithm>
#include <vector>
#include <cmath>
#include <queue>
#include <map>
#include <unordered_map>
#include <set>
#include <functional>
#include <iomanip>
#include <bitset>
#include <cassert>
using namespace std;
typedef long long ll;

void e() {
	int n; cin >> n;
	ll ans = 0;
	for (int i = 0; i < n; i++) {
		ll a; cin >> a; ans += a;
	}
	cout << ans << endl;
}

int main() {
	e();
	return 0;
}