#include <iostream>
#include <numeric>
using namespace std;

#define SIZE_OF_ARRAY(array) (sizeof(array))/sizeof(array[0])

int main() {
	int n;
	cin >> n;
	long int num;
	long int sum = 0;
	for (int i = 0; i < n; i++) {
		cin >> num;
		sum += num;
	}
	cout << sum << endl;

}