using System;

class saberi {
  static void Main(string[] args) {
    if(args.Length > 0) {
      double sum = 0.0;
      foreach(string s in args) {
        sum += double.Parse(s);
      }
      Console.WriteLine(sum);
    }
    else {
      Console.WriteLine("Nije naveden nijedan broj");
    }
  }
}