#include <bits/stdc++.h>
using namespace std;
using ll = long long;
int main() {
    ll N, a = 0;
    cin >> N;
    vector<ll>A(N);
    for(ll i = 0; i < N; i++)cin >> A.at(i);
    for(ll i = 0; i < N; i++)a += A.at(i);
    cout << a << endl;
}