using System;

public class Program

{

    // Pretending to look up this dynamic Number

    const int NUMBER_OF_POST_TYPES = 12;

    const int NUMBER_OF_TOP_LEVEL_GROUPS = 3;

    const int YEARS_TO_RUN = 4;

    const int WEEKS_IN_YEAR = 52;

    const int DAYS_IN_WEEK = 7;

    public static void Main()

    {

        var startingDate = DateTime.Today;

        var numPostCategories = GetNumberOfPostCategories();

        for (var weekNum = 1; weekNum < (YEARS_TO_RUN * WEEKS_IN_YEAR + 1); weekNum++)

        {

            if (weekNum % NUMBER_OF_TOP_LEVEL_GROUPS == 2)

            {

                var currentDate = startingDate.AddDays(weekNum * DAYS_IN_WEEK).ToString("D");

                var postCategory = (Decimal.Truncate( weekNum / NUMBER_OF_TOP_LEVEL_GROUPS) % numPostCategories) + 1;

                Console.WriteLine($"For {currentDate} - week: {weekNum} - use Post Type Category {postCategory}");

            }

        }

    }

    public static int GetNumberOfPostCategories()

    {

        return NUMBER_OF_POST_TYPES;

    }

}