#include <iostream>
using namespace std;
int main()
{
	int N,i,sum;
	sum = 0;
	cin >> N;
	double A[N];
	for (i = 1; i <= N; i++)
	{
		cin >> A[i - 1];
		sum += A[i - 1];
	}
	cout << sum<<"\n";
	return 0;
}