#include <iostream>
using namespace std;
typedef long long ll;

const int MAX_N = 200000;
int N;
ll ans;
ll A[MAX_N];

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