#include <iostream>
#include <cmath>
#include <algorithm>
#include <vector>
#include <string>
#include <set>

using namespace std;

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

    long long ans = 0;

    while (n--) {
        int x;
        cin >> x;
        ans += x;
    }

    cout << ans <<endl;

}