/**
 * This program lets you enter one or more
 * arguments.
 *
 * After compiling, run with:
 * $ java SumSome7 1 2 3 4 5
 */
class SumSome7 {
  public static void main(String[] args) {
    if (args.length < 1) {
      System.out.println("You need to enter at least one number!");
      System.exit(1);
    }

    int sum = 0;
    for (int i = 0; i < args.length; i++) {
      sum += Integer.valueOf(args[i]);
    }

    System.out.println(sum);
  }
}