#include <iostream>


using namespace std;


int main()
{
    int n;
    cin >> n;
    int sum = 0;
    int brojac = 1;
    
    while(brojac <= n) {
        int x;
        cin >> x;
        
        sum += x;
        brojac++;
    }
    
    cout << sum << endl;
    

    
    return 0;
}