using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;

public class Day2
{

    static void PartA()
    {
        //Day 2!
        string path = Directory.GetCurrentDirectory() + "/input.txt";
        List<string> lines = new List<string>();
        using (StreamReader sr = new StreamReader(path))
        {
            while (sr.Peek() >= 0)
            {
                lines.Add(sr.ReadLine());
            }
        }
        int total = 0;
        foreach (string s in lines)
        {
            string[] subs = s.Split('-', ' ', ':');
            int low = Int32.Parse(subs[0]);
            int high = Int32.Parse(subs[1]);
            char c = subs[2][0];
            int count = subs[4].Count(x => x == c);
            if (count >= low && count <= high) total++;
        }

        Console.WriteLine(total);
    }

    static void PartB()
    {
        //Day 2!
        string path = Directory.GetCurrentDirectory() + "/input.txt";
        List<string> lines = new List<string>();
        using (StreamReader sr = new StreamReader(path))
        {
            while (sr.Peek() >= 0)
            {
                lines.Add(sr.ReadLine());
            }
        }
        int total = 0;
        foreach (string s in lines)
        {
            string[] subs = s.Split('-', ' ', ':');
            int low = Int32.Parse(subs[0]);
            int high = Int32.Parse(subs[1]);
            char c = subs[2][0];
            char a = subs[4][low - 1];
            char b = subs[4][high - 1];
            if ((a == c) ^ (b == c)) total++;

        }
        Console.WriteLine(total);
    }

}