#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef vector<int> vec;
typedef vector<string> vecstr;
#define rep(i, n) for (int i = 0; i < (n); ++i)
#define NO printf("NO")
#define YES printf("YES")

int main() {
    int n;
    cin >> n;
    ll ans = 0;
    rep(i, n) {
        ll num;
        cin >> num;
        ans += num;
    }
    cout << ans << endl;
}