import java.util.Scanner;

/** Add.java - The user is going to type one number per line, and we will
 *  add up all these numbers.  The user will signal the end by entering -1.
 */
public class Add
{
  public static void main(String [] args)
  {
    Scanner kbd = new Scanner(System.in);

    int total = 0;
    while(kbd.hasNextLine())
    {
      String line = kbd.nextLine();
      int value = Integer.parseInt(line);

      if (value == -1)
        break;

      total += value;
    }
    System.out.printf("The total is %d.\n", total);
  }
}