using System;

public class Day4
{
    static void PartA()
    {
        string path = Directory.GetCurrentDirectory() + "/input.txt";
        string text;
        using (StreamReader sr = new StreamReader(path))
        {
            text = sr.ReadToEnd();
        }
        string[] passes;
        string[] reqs = { "byr", "iyr", "eyr", "hgt", "hcl", "ecl", "pid" };

        int legitPasses = 0;
        passes = text.Split("\n\n");


        foreach (string pass in passes)
        {
            bool valid = true;
            foreach (string req in reqs)
            {
                if (!pass.Contains(req))
                {
                    valid = false;
                    break;
                }
            }
            if (valid) legitPasses++;
        }
        Console.WriteLine(legitPasses);
    }

    static void PartB()
    {
        string path = Directory.GetCurrentDirectory() + "/input.txt";
        string text;
        using (StreamReader sr = new StreamReader(path))
        {
            text = sr.ReadToEnd();
        }
        string[] passes;
        string[] reqs = { "byr", "iyr", "eyr", "hgt", "hcl", "ecl", "pid" };

        //debug
        Dictionary<string, int> killed = new Dictionary<string, int>();
        foreach (string req in reqs)
        {
            killed.Add(req, 0);
        }

        int legitPasses = 0;
        passes = text.Split("\n\n");

        foreach (string pass in passes)
        {
            bool valid = true;
            foreach (string req in reqs)
            {
                if (!pass.Contains(req))
                {
                    valid = false;
                    break;
                }
            }
            if (!valid) continue;


            string[] fields = pass.Split('\n', ' ');


            foreach (string field in fields)
            {

                if (field.Contains("byr"))
                {
                    string entry = field.Split("byr:", StringSplitOptions.RemoveEmptyEntries)[0];
                    int year;
                    if (Int32.TryParse(entry, out year))
                    {
                        if (year < 1920 || year > 2002)
                        {
                            valid = false;
                            killed["byr"]++;
                            break;

                        }
                    }
                    else
                    {
                        valid = false;
                        killed["byr"]++;
                        break;
                    }

                }
                else if (field.Contains("iyr"))
                {
                    string entry = field.Split("iyr:", StringSplitOptions.RemoveEmptyEntries)[0];
                    int year;
                    if (Int32.TryParse(entry, out year))
                    {
                        if (year < 2010 || year > 2020)
                        {
                            valid = false;
                            killed["iyr"]++;
                            break;
                        }
                    }
                    else
                    {
                        valid = false;
                        killed["iyr"]++;
                        break;
                    }

                }
                else if (field.Contains("eyr"))
                {
                    string entry = field.Split("eyr:", StringSplitOptions.RemoveEmptyEntries)[0];
                    int year;
                    if (Int32.TryParse(entry, out year))
                    {
                        if (year < 2020 || year > 2030)
                        {
                            killed["eyr"]++;
                            valid = false;
                            break;
                        }
                    }
                    else
                    {
                        killed["eyr"]++;
                        valid = false;
                        break;
                    }
                }
                else if (field.Contains("hgt"))
                {
                    string entry = field.Split("hgt:", StringSplitOptions.RemoveEmptyEntries)[0];
                    if (entry.Contains("cm"))
                    {
                        entry = entry.Substring(0, entry.Length - 2);
                        int num;
                        if (Int32.TryParse(entry, out num))
                        {
                            if (num < 150 || num > 193)
                            {
                                killed["hgt"]++;
                                valid = false;
                                break;
                            }
                        }
                        else
                        {
                            killed["hgt"]++;
                            valid = false;
                            break;
                        }
                    }
                    else if (entry.Contains("in"))
                    {
                        entry = entry.Substring(0, entry.Length - 2);
                        int num;
                        if (Int32.TryParse(entry, out num))
                        {
                            if (num < 59 || num > 76)
                            {
                                killed["hgt"]++;
                                valid = false;
                                break;
                            }
                        }
                        else
                        {
                            killed["hgt"]++;
                            valid = false;
                            break;
                        }
                    }
                    else
                    {
                        killed["hgt"]++;
                        valid = false;
                        break;
                    }
                }
                else if (field.Contains("hcl"))
                {
                    string entry = field.Split("hcl:", StringSplitOptions.RemoveEmptyEntries)[0];
                    if (entry[0] == '#' && entry.Length == 7)
                    {
                        string wrongElements = String.Join("", entry.Split('#', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'));
                        if (wrongElements != "")
                        {
                            killed["hcl"]++;
                            valid = false;
                            break;
                        }
                    }
                    else
                    {
                        killed["hcl"]++;
                        valid = false;
                        break;
                    }
                }
                else if (field.Contains("ecl"))
                {
                    string entry = field.Split("ecl:", StringSplitOptions.RemoveEmptyEntries)[0];
                    if (entry != "amb" && entry != "blu" && entry != "brn" && entry != "grn" && entry != "gry" && entry != "hzl" && entry != "oth")
                    {
                        killed["ecl"]++;
                        valid = false;
                        break;
                    }
                }
                else if (field.Contains("pid"))
                {
                    string entry = field.Split("pid:", StringSplitOptions.RemoveEmptyEntries)[0];

                    if (entry.Length == 9)
                    {
                        int num;
                        if (!Int32.TryParse(entry, out num))
                        {
                            killed["pid"]++;
                            //Console.WriteLine("kill pid:" + entry + "|" + num);
                            valid = false;
                            break;
                        }
                    }
                    else
                    {
                        //Console.WriteLine("kill pid: (length)" + entry );
                        killed["pid"]++;
                        valid = false;
                        break;
                    }
                }
            }
            if (valid) legitPasses++;
        }

        //foreach (KeyValuePair<string, int> kill in killed)
        //{
        //    Console.WriteLine(kill.Key + ":" + kill.Value);
        //}

        Console.WriteLine(legitPasses);
    }
}