Phone

using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

class Phone
{
    static void Main()
    {
        var phones = Console.ReadLine().Split();
        var names = Console.ReadLine().Split();
        var func = Console.ReadLine().Split();
        while (func[0] != "done")
        {
            var match = func[1];
            var duration = 0.00;
            var difference = 0;
            var isPhone = false;
            var matchedPhone = String.Empty;
            var matchedName = String.Empty;
            for (int i = 0; i < phones.Length; i++)
            {
                if (match == phones[i])
                {
                    matchedPhone = phones[i];
                    matchedName = names[i];
                    isPhone = true;
                    break;
                }
                else if (match == names[i])
                {
                    isPhone = false;
                    matchedPhone = phones[i];
                    matchedName = names[i];
                    break;
                }
            }
            switch (func[0])
            {
                case "call":
                        duration = CalcDuration(matchedPhone);
                        var start = "00:00";
                        var startTime = DateTime.ParseExact(start,"mm:ss",CultureInfo.InvariantCulture);
                        startTime=startTime.AddSeconds(duration );
                    if (isPhone)
                    {

                        Console.WriteLine("calling {0}...", matchedName);
                        if (duration % 2 == 1)
                        {
                            Console.WriteLine("no answer");
                        }
                        else
                        {
                            Console.WriteLine("call ended. duration: {0}", startTime.ToString("mm:ss"));
                        }
                    }
                    else
                    {
                        duration = CalcDuration(matchedPhone);
                        Console.WriteLine("calling {0}...", matchedPhone);
                        if (duration % 2 == 1)
                        {
                            Console.WriteLine("no answer");
                        }
                        else
                        {
                            Console.WriteLine("call ended. duration: {0}", startTime.ToString("mm:ss"));
                        }
                    }
                    break;
                case "message":
                    if (isPhone)
                    {
                        difference = CalcDifference(matchedPhone);
                        Console.WriteLine("sending sms to {0}...", matchedName);
                        if (difference % 2 == 1)
                        {
                            Console.WriteLine("busy");
                        }
                        else
                        {
                            Console.WriteLine("meet me there");
                        }
                    }
                    else
                    {
                        difference = CalcDifference(matchedPhone);
                        Console.WriteLine("sending sms to {0}...", matchedPhone);
                        if (Math.Abs(difference) % 2 == 1)
                        {
                            Console.WriteLine("busy");
                        }
                        else
                        {
                            Console.WriteLine("meet me there");
                        }
                    }
                    break;
                default:
                    break;
            }
            func = Console.ReadLine().Split();
        }
    }

    private static int CalcDifference(string phone)
    {
        var difference = 0;
        for (int p = 0; p < phone.Length; p++)
        {
            if (char.IsDigit(phone[p]))
            {
                var digit = char.GetNumericValue(phone[p]);
                difference -= int.Parse(digit.ToString());
            }
        }
        return difference;
    }
    private static double CalcDuration(string phone)
    {

        var duration = 0.00;
        for (int p = 0; p < phone.Length; p++)
        {
            if (char.IsDigit(phone[p]))
            {
                var digit = char.GetNumericValue(phone[p]);
                duration +=double.Parse( digit.ToString());
            }
        }
        duration = duration % 86400;

        return duration;
    }
}