#include <bits/stdc++.h>
using namespace std;

int main(){
    int i, indices;
    cin >> indices ;
    long long num[indices];
    for(i=0; i<indices; i++){
        num[i] = 0;
        cin >> num[i];
    }
    long long sum;
    sum =  accumulate(num, num + sizeof(num)/sizeof(num[0]), 0.0);
    cout <<  sum << endl;
    return 0;
}