#include <iostream>
using namespace std;

int main(){
	int N;
	cin >> N;
	long long* A = new long long[N];
	long long sum = 0;
	for (int i = 0; i < N; i++) {
		cin >> A[i];
		sum += A[i];
	}
	cout << sum << endl;
	delete[] A;
}