using System;

public class ChallengeClass

{

     int i,t,a;

     public bool Check(string s)

    {

         a = s.Split(',');

        int R(int j) => 

            i<9

                ?j<a.Length

                    ?(t+=int.Parse(a[j]))!=0

                        ?R(++j)

                        :0

                    :R((t=0)+ ++i)

                :1;

        return R(0)<1;

    }

    public static void Main()

    {

        var b = 1;

        var z = ++b;

        Console.WriteLine(z);

        Console.WriteLine(new ChallengeClass().Check("-34, 5, -5, -9, 7, -17, -29, -34, 39"));

    }

}