using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        Console.WriteLine(Program.solution("4(the)"));

    }

    public static string solution(string input)

    {

        //find the iteger number in the start

        int i = Convert.ToInt32(input.Substring(0,input.IndexOf('(')));

        string temp1,temp2,output=string.Empty;

        //get the substring after '(

        temp1 = input.Substring(input.IndexOf('(')+1);

        //get the substring till ')'

        temp2 = temp1.Substring(0,temp1.IndexOf(')'));

        //concatenate the i times

        for (int j =1;j<=i;j++)

        {

            output = string.Concat(output,temp2);

        }

        return output;

​

    }

​

}