using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        Console.WriteLine("1 -> " + WeekNumberFromDayNumber(1));

        Console.WriteLine("5 -> " + WeekNumberFromDayNumber(5));

        Console.WriteLine("6 -> " + WeekNumberFromDayNumber(6));

        Console.WriteLine("7 -> " + WeekNumberFromDayNumber(7));

        Console.WriteLine("12 -> " + WeekNumberFromDayNumber(12));

        Console.WriteLine("13 -> " + WeekNumberFromDayNumber(13));

    }

    const int ContentDaysPerWeek = 6;

    static int WeekNumberFromDayNumber(int dayNumber)

    {

        return 1 + dayNumber / (ContentDaysPerWeek + 1);

    }

}