using System;
using System.Collections.Generic;

class CookieStore {

    public List<string> customers = new List<string>();
    public List<int> days = new List<int>();

    public bool similarCustomer(string customer1, string customer2) {
        int cnt = 0;
        for (int i = 0; i < 6; i++) {
            if (customer1[i] != customer2[i]) {
                cnt++;
            }
        }
        return cnt <= 1;
    }

    public void startNewDay() {
        customers.Clear();
        days.Add(0);
        return;
    }

    public bool processCustomer(string customerIdentifier) {
        foreach (string s in customers) {
            if (similarCustomer(s, customerIdentifier)) return false;
        }
        customers.Add(customerIdentifier);
        days[days.Count - 1]++;
        return true;
    }

    public int countCookiesGiven(int dayCount) {
        int total = 0;
        for (int i = 0; i < dayCount; i++) {
            total += days[days.Count - 1 - i];
        }
        return total;
    }
}

class Program
{
    static void Main(string[] args)
    {
        CookieStore cookieStore = new CookieStore();
        Console.WriteLine("Your output:");
        cookieStore.startNewDay();
        Console.WriteLine(cookieStore.processCustomer("joelgb"));
        Console.WriteLine(cookieStore.processCustomer("joelab"));
        Console.WriteLine(cookieStore.countCookiesGiven(1));
        cookieStore.startNewDay();
        Console.WriteLine(cookieStore.processCustomer("joelab"));
        Console.WriteLine(cookieStore.countCookiesGiven(1));
        Console.WriteLine(cookieStore.countCookiesGiven(2));
        cookieStore.startNewDay();
        Console.WriteLine(cookieStore.countCookiesGiven(2));

        Console.WriteLine("Expected output:");
        Console.WriteLine(true);
        Console.WriteLine(false);
        Console.WriteLine(1);
        Console.WriteLine(true);
        Console.WriteLine(1);
        Console.WriteLine(2);
        Console.WriteLine(1);
    }
}