#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<n;i++)
using namespace std;
typedef long long ll;
typedef pair<int,int> pp;
const int INF = 1e9;
const int MOD = 1000000007;

int main(){
        int n;
        cin >> n;
        ll sum = 0;
        for(int i=1;i<=n;i++){
                ll a;
                cin >> a;
                sum += a;
        }
        cout << sum << endl;
                

        return 0;   
}