Sudoku result

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

class Sudoku
{
    static void Main()
    {
        string inputTime = Console.ReadLine();
        //string inputTime2 = "05:00";
        //string inputTime3 = "15:00";
        int games = 0;
        //string[] parameters = inputTime.Split(':');
        //int minutes = int.Parse(parameters[0]);
        //int seconds = int.Parse(parameters[1]);
        decimal sumMins = 0;
        decimal sumSec = 0;


        while (inputTime != "Quit")
        {

            string[] parameters = inputTime.Split(':');
            int minutes = int.Parse(parameters[0]);
            int seconds = int.Parse(parameters[1]);
            sumMins += minutes;
            sumSec += seconds;
            games++;
            inputTime = Console.ReadLine();

        }

        sumMins *= 60;

        sumSec += sumMins;
        decimal average = sumSec / games;

        if (average < 720m)
        {
            Console.WriteLine("Gold Star");
            Console.WriteLine("Games - {0} \\ Average seconds - {1}", games,
                Math.Ceiling(average));
        }

        else if (average > 1440m)
        {
            Console.WriteLine("Bronze Star");
            Console.WriteLine("Games - {0} \\ Average seconds - {1}", games,
            Math.Ceiling(average));
        }

        else
        {
            Console.WriteLine("Silver Star");
            Console.WriteLine("Games - {0} \\ Average seconds - {1}", games, Math.Ceiling(average));
        }











    }
}