Video Durations (updated)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;

class UserLogs
{
    static void Main()
    {
        int totalMinutes = 0;
        string input = Console.ReadLine();

        while (input != "End")
        {
            int[] arr = input.Split(':').Select(int.Parse).ToArray();
            int mins = arr[1];
            int hours = arr[0];
            totalMinutes += hours * 60 + mins;

            input = Console.ReadLine();
        }

        int totalHours = totalMinutes / 60;
        totalMinutes %= 60;
        Console.WriteLine("{0}:{1}", totalHours, totalMinutes.ToString("D2"));
    }
}