using System;

using System.Text.RegularExpressions;                   

public class Program

{

    public static void Main()

    {

        double y = 0.3;

        string x =  "fuck you 42.4% blabla)";       

        double x1 = Double.TryParse(Regex.Match(x, @"\d+(\.\d+)?").Value, out x1) ? x1 * 0.01 : 0;

        Console.WriteLine(x1);

        if (x1 > y)

            Console.WriteLine(100);

        else

            Console.WriteLine(-100);

    }

}