import java.io.*; public class SumNumbers2 { public static void main(String[] args){ BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); try { String line = reader.readLine(); int n = Integer.parseInt(line); int sum = 0; for (int i = 0; i < n; i++){ line = reader.readLine(); int a = Integer.parseInt(line); sum = sum + a; } System.out.println(sum); } catch (IOException e){ System.out.println(e); } } }