Vladko's Notebook

using System;
using System.Collections.Generic;

class Notebook
{
    static void Main()
    {
        var colorSheets = new SortedDictionary<string, Dictionary<string, List<string>>>();
        string input;
        while ((input = Console.ReadLine()) != "END")
        {
            var tokens = input.Split('|');
            var color = tokens[0];
            if (!colorSheets.ContainsKey(color))
            {
                colorSheets.Add(color, new Dictionary<string, List<string>>());
            }
            switch (tokens[1])
            {
                case "age":
                    if (!colorSheets[color].ContainsKey("age"))
                    {
                        colorSheets[color]["age"] = new List<string> {tokens[2]};
                    }
                    break;
                case "name":
                    if (!colorSheets[color].ContainsKey("name"))
                    {
                        colorSheets[color]["name"] = new List<string> {tokens[2]};
                    }
                    break;
                case "win":
                    if (!colorSheets[color].ContainsKey("wins"))
                    {
                        colorSheets[color]["wins"] = new List<string>();
                    }
                    if (!colorSheets[color].ContainsKey("opponents"))
                    {
                        colorSheets[color]["opponents"] = new List<string>();
                    }
                    colorSheets[color]["wins"].Add("x");     //random token to mark a win
                    colorSheets[color]["opponents"].Add(tokens[2]);
                    break;
                case "loss":
                    if (!colorSheets[color].ContainsKey("losses"))
                    {
                        colorSheets[color]["losses"] = new List<string>();
                    }
                    if (!colorSheets[color].ContainsKey("opponents"))
                    {
                        colorSheets[color]["opponents"] = new List<string>();
                    }
                    colorSheets[color]["losses"].Add("x");     //random token to mark a loss
                    colorSheets[color]["opponents"].Add(tokens[2]);
                    break;
            }
        }
        var found = false;
        foreach (var key in colorSheets.Keys)
        {
            if (!colorSheets[key].ContainsKey("name") || !colorSheets[key].ContainsKey("age"))
            {
                continue;
            }
            found = true;
            if (!colorSheets[key].ContainsKey("opponents"))
            {
                Console.WriteLine("Color: " + key);
                Console.WriteLine("-age: " + colorSheets[key]["age"][0]);
                Console.WriteLine("-name: " + colorSheets[key]["name"][0]);
                Console.WriteLine("-opponents: (empty)");
                Console.WriteLine("-rank: 1.00");
            }
            else if (colorSheets[key].ContainsKey("opponents"))
            {
                var losses = colorSheets[key].ContainsKey("losses") ? colorSheets[key]["losses"].Count + 1.0 : 1.0;
                var wins = colorSheets[key].ContainsKey("wins") ? colorSheets[key]["wins"].Count + 1.0 : 1.0;
                var rank = wins / losses;
                colorSheets[key]["opponents"].Sort(StringComparer.Ordinal);

                Console.WriteLine("Color: " + key);
                Console.WriteLine("-age: " + colorSheets[key]["age"][0]);
                Console.WriteLine("-name: " + colorSheets[key]["name"][0]);
                Console.WriteLine("-opponents: " + string.Join(", ", colorSheets[key]["opponents"]));
                Console.WriteLine("-rank: {0:F2}", rank);
            }
        }
        if (!found)
        {
            Console.WriteLine("No data recovered.");
        }
    }
}