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

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

    int n;
    cin >> n;

    ll r = 0;
    for (int i = 0; i < n; i++) {
        ll a;
        cin >> a;

        r += a;
    }

    cout << r << endl;

    return 0;
}