#include <bits/stdc++.h>
using namespace std;

using ll = long long;

int main() {
    cin.tie(0);
    ios_base::sync_with_stdio(0);

    int n; cin >> n;
    ll ans = 0;
    while (n--) {
        ll x; cin >> x;
        ans += x;
    }
    cout << ans << '\n';
    return 0;
}