import java.io.*;
import java.util.*;

public class FastSum {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer st = new StringTokenizer(br.readLine());
        int n = Integer.parseInt(st.nextToken());
        st = new StringTokenizer(br.readLine());
        long sum = 0;
        for (int i = 0; i < n; i++) {
            sum += Long.parseLong(st.nextToken());
        }
        System.out.println(sum);
        br.close();
    }
}