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

int main() {
    cin.tie(0)->sync_with_stdio(0);

    int N;
    cin >> N;
    ll ans = 0;
    rep(i, N) {
        ll a;
        cin >> a;
        ans += a;
    }
    cout << ans << "\n";

    return 0;
}