Болница

using System;

namespace tESt
{
    class Program
    {
        static void Main(string[] args)
        {
            var time = int.Parse(Console.ReadLine());


            var doctors = 7;
            var treatedPatients = 0;
            var unTreatedPatients = 0;


            for (int day = 1; day <= time; day++)
            {
                var currentPatients = int.Parse(Console.ReadLine());


                if ((day % 3 == 0) && (unTreatedPatients > treatedPatients))
                {
                    doctors = doctors + 1;
                }

                if (currentPatients > doctors)
                {
                    unTreatedPatients = unTreatedPatients + (currentPatients - doctors);


                    treatedPatients = treatedPatients + doctors;
                }
                else
                {
                    treatedPatients = treatedPatients + currentPatients;
                }
            }
            Console.WriteLine($"Treated patients: {treatedPatients}.");
            Console.WriteLine($"Untreated patients: {unTreatedPatients}.");

        }
    }
}