#include <iostream>
#include <string>

using namespace std;

int main() {


	long a, b, ans;
	
	cin >> a;
	
	ans = 0;
	
	for(long i = 0; i < a; i++)
	{
		cin >> b;
		ans += b;
	}

    cout << ans << endl;
    return 0;
}