using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        TimeSpan[] hours = new[] { 

            new TimeSpan(10,35,50), 

            new TimeSpan(10,36,48), 

            new TimeSpan(10,41,48), 

            new TimeSpan(10,47,58), 

            new TimeSpan(10,49,14), 

            new TimeSpan(11,22,15), 

            new TimeSpan(11,24,18), 

            new TimeSpan(11,25,25), 

        };

        var query = hours.Aggregate(new List<(int group, TimeSpan ts)>(),  (acc,curr) => {

            if(acc.Count == 0)

                acc.Add((0,curr));          

            else 

            {

                var (lastGroup,lastTs) = acc.Last();

                if(curr.Subtract(lastTs).TotalMinutes <= 5)

                    acc.Add((lastGroup,curr));

                else

                    acc.Add((lastGroup+1,curr));

            }

            return acc;

        }).GroupBy(x => x.group, y => y.ts);

        foreach(var item in query)

            Console.WriteLine(String.Join(", ", item));

    }

}