using System;

public class Program

{

    public static float x = 1.92f; //Comment: just input the value here, but don't delete the "f"! Then press "Run" above and check below.

    public static string xString = Convert.ToString(x);

    public static void Main()

    {   

        if(x >= 6.71 && x <= 7.13)

        {

            xString = "$2.00";

        }

        else if (x >= 6.06 && x <= 6.48)

        {

            xString = "$1.00";

        }

        else if (x >= 4.27 && x <= 4.53)

        {

            xString = "$0.25";

        }

        else if (x >= 1.70 && x <= 1.80)

        {

        xString = "$0.10";

        }

        else if (x >= 3.82 && x <= 4.08)

        {

            xString = "$0.05";

        }

        else

        {

            xString = "reject coin";

        }

        Console.WriteLine(xString);

    }

}