#include<iostream>
#include<string>
#include<vector>
using namespace std;

int main(){
	long long n;
	vector <long long> a;
	cin >> n;
	long long tmp;
	long long ans=0;
	for(int i=0; i<n; i++){
		cin >> tmp;
		ans += tmp;
	}
	cout << ans;
	
	

}