using System;

public class Program

{

    public static void Main()

    {

        Console.Write("Enter a number from 1-12: ");

        string n = Console.ReadLine();

        int ParsedValue;

        bool success = int.TryParse(n,out ParsedValue);

        int num = 0;

        if(success){

            num = int.Parse(n);

            switch(num){

                case 1:

                    Console.Write("January: 31 days");

                    break;

                case 2:

                    Console.Write("February: 28 days or 29 days on a leap year");

                    break;

                case 3:

                    Console.Write("March: 31 days");

                    break;

                case 4:

                    Console.Write("April: 30 days");

                    break;

                case 5:

                    Console.Write("May: 31 days");

                    break;

                case 6:

                    Console.Write("June: 30 days");

                    break;

                case 7:

                    Console.Write("July: 31 days");

                    break;

                case 8:

                    Console.Write("August: 31 days");

                    break;

                case 9:

                    Console.Write("September: 30 days");

                    break;

                case 10:

                    Console.Write("October: 31 days");

                    break;

                case 11:

                    Console.Write("November: 30 days");

                    break;

                case 12:

                    Console.Write("December: 31 days");

                    break;

                default:

                    Console.Write("Wrong Input");

                    break;

            }   

        }else

            Console.Write("Wrong Input");   

    }

}