#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define endl "\n"

int main() {
    int N;
    cin >> N;

    ll ans = 0;
    ll A;
    for (int i = 0; i < N; ++i) {
        cin >> A;
        ans += A;
    }
    cout << ans << endl;
    return 0;
}