using System;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        var ranges = new List<(decimal, decimal)>()

        {

            (-8, 9),

            (-10, -11),

            (-7, -11),

        };

​

        var sortableStrings = new List<string>();

        foreach (var range in ranges)

        {

            var x = range.Item1;

            var y = range.Item2;

            var sortableX = GetSortableString(x);

            var sortableY = GetSortableString(y);

            var sortableString = $"{sortableX},{sortableY}";

            sortableStrings.Add(sortableString);

        }

        sortableStrings.Sort();

        foreach (var s in sortableStrings)

        {

            Console.WriteLine(s);

        }

    }

​

    public static string GetSortableString(decimal value)

    {

        // Define the number of decimal places to preserve

        var decimalPlaces = 28; // Maximum precision for decimal in C#

​

        // Split the value into integer and fractional parts

        var parts = value.ToString($"F{decimalPlaces}").Split('.');

​

        var integerPart = Math.Abs(int.Parse(parts[0])).ToString();

        var fractionalPart = parts.Length > 1 ? parts[1] : "";

​

        // Pad the fractional part to ensure consistent length

        fractionalPart = fractionalPart.PadRight(decimalPlaces, '0');

​

        // Handle the sign separately

        var sign = value < 0 ? "0" : "1"; // '0' for negative, '1' for positive

​

        // Pad the integer part to a fixed length based on the maximum possible digits

        // The length is chosen based on the maximum possible digits for the integer part

        integerPart = integerPart.PadLeft(40, '0'); // Adjust as needed

​

        return $"{sign}{integerPart}{fractionalPart}";

    }

}