using System;

using System.Linq;

using System.Text;

using System.Collections.Generic;

​

public class Simple {

  public static void Main() {

    List<int> listData=new List<int> {1,15,51,051,06,10606,062,0626,999,59,052,520,0,06595,78};

      var d=listData.Single(s=>s<=1);

      Console.WriteLine("Data I-"+d.ToString());

      StringBuilder ls=new StringBuilder();

      foreach(int i in listData)

      {

        ls.Append(i+ " - ");

      }

      Console.WriteLine("Data-"+ls.ToString());

    Console.WriteLine("Hello World");

  }

}