using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
 
namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            string calendar = "";
            calendar = (from x in Enumerable.Range(1, 12)
                        group x by (x + 2) / 3 into g
                        select (BuildCalendar(DateTime.Now.Year, g.ToList()[0]).Split(new char[] { '\r', '\n' }, StringSplitOptions.RemoveEmptyEntries).Union(new string[] { "\r\n" })
                              .Zip(BuildCalendar(DateTime.Now.Year, g.ToList()[1]).Split(new char[] { '\r', '\n' }, StringSplitOptions.RemoveEmptyEntries).Union(new string[] { "\r\n" }), (x, y) => x.TrimEnd().PadRight(23, ' ') + y)
                              .Zip(BuildCalendar(DateTime.Now.Year, g.ToList()[2]).Split(new char[] { '\r', '\n' }, StringSplitOptions.RemoveEmptyEntries).Union(new string[] { "\r\n" }), (x, y) => x.TrimEnd().PadRight(46, ' ') + y))
                              .Zip(Enumerable.Repeat("\r\n", 8), (x, y) => x + y)
                              .Aggregate((serials, current) => serials + current))
                         .Aggregate((serials, current) => serials + current);
            Console.WriteLine(DateTime.Now.Year + "\r\n" + calendar);
        }
 
        static string BuildCalendar(int year, int month)
        {
            string calendar = new string[] { month.ToString(), "SU MO TU WE TH FR SA" }
                .Union(Enumerable.Range(
                    1 - (int)new DateTime(year, month, 1).DayOfWeek,
                    new DateTime(year, month, 1).AddMonths(1).AddDays(-1).Day + (int)new DateTime(year, month, 1).DayOfWeek
                )
                .GroupBy(x => ((x + (int)(new DateTime(year, month, 1).DayOfWeek + 6)) / 7), (key, g) => new { GroupKey = key, Items = g })
                .Select(x =>
                    x.Items.Select(y => y < 1 ? "   " : Convert.ToString(y).PadLeft(2, '0') + " ")
                           .Aggregate((serials, current) => serials + current))
                )
                .Aggregate((serial, current) => serial + "\r\n" + current);
            return calendar;
        }
    }
}

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