using System;

​

public class Program

{

    public static void Main()

    {

        int year = 2022;

        ListDates(year);

    }

​

    public static void ListDates(int year)

    {

        for (int month = 1; month <= 12; month++)

        {

            for (int day = 1; day <= DateTime.DaysInMonth(year, month); day++)

            {

                DateTime date = new DateTime(year, month, day);

                Console.WriteLine(date.ToString("yyyy-MM-dd"));

            }

        }

    }

}