#include <bits/stdc++.h>
#include <vector>
#include <iostream>
#include <map>
#include <string>
#include <cmath>
#include <algorithm>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
using ll = long long;
using P = pair<int, int>;

int main() {
    
    int N;
    cin >> N;
    ll A;
    ll sum = 0;
    rep(i,N) {
        cin >> A;
        sum += A;
    }
    cout << sum << endl;
    
}