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

public class Solve
{
    public static void main(String[] args) throws Exception
    {
        BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
        
        int n = Integer.parseInt(in.readLine());
        long sum = 0L;
        
        for (int i = 0; i < n; i++)
        {
            sum += Long.parseLong(in.readLine());
        }
        
        System.out.println(sum);
    }
}