class Register
{
    private readonly string _path;

    public Register(string path)
    {
        this._path = path;
    }

    public IEnumerable<Triangle> Triangles
    {
        get
        {
            return File.ReadLines(_path)
                .Select(i => i.Split(' '))
                .Select(i => new Triangle()
                {
                    A = int.Parse(i[0]),
                    B = int.Parse(i[1]),
                    C = int.Parse(i[2]),
                });
        }
    }
}

static class Program2
{
    static bool TryRead(string s, out double x)
    {
        Console.Write("{0}: ", s);
        return double.TryParse(Console.ReadLine(), out x);
    }

    static void Print(string msg, IEnumerable<Triangle> triangles)
    {
        Console.WriteLine(msg);
        foreach (var triangle in triangles)
            Console.WriteLine(triangle);
    }

    static void Main()
    {
        // Second program
        var register = new Register("Triangles.txt");
        Print("All", register.Triangles);
        Print("1) Sorted by P", register.Triangles.OrderBy(i => i.S));

        double threshold;
        if (TryRead("Threshold", out threshold))
        {
            Console.WriteLine("2) S > Threshold");
            foreach (var i in register.Triangles
                .Where(i => i.S > threshold)
                .Select(i => new {i.A, i.B, i.C, i.S, i.P}))
            {
                Console.WriteLine($"A:{i.A}\tB:{i.B}\tC:{i.C}\tP:{i.P}\tS:{i.S:F2}");
            }
        }
    }
}