#include <iostream>
#include <cstdio>
#include <vector>
using namespace std;

int main()
{
    int n;
    cin >> n;
    vector<long long> v;
    for(int i=0; i<n; ++i) {
        long long x;
        cin >> x;
        v.push_back(x);
    }

    long long s = 0;
    for(int i=0; i<v.size(); ++i) {
        s += v[i];
    }
    cout << s << endl;
	return 0;
}