using System;

using System.Linq;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        var inputStr = "name,firstname,surname,std,Rollno";

        var result = "(" + 

            string.Join(", ", inputStr.Split().Select(x => $"'{x}'")) 

            + ")";

        Console.WriteLine(result);

    }

}