#include <iostream>
int main()
{
	int N;
	long long int sum = 0,i;
	double A[256];

	std::cin >> N;

	for (i = 0; i < N; i++)
	{
		std::cin >> A[i];
		sum = sum + A[i];
	}

	std::cout << sum;

	return 0;
}