using System;

public class Program

{

    public static void Main()

    {

        int N ;

        do{

        Console.WriteLine("Input a number : ");

        N = int.Parse(Console.ReadLine());

        }while (N <= 0);

        {

             if (N%2 == 1 )

                 Console.WriteLine("{0} is odd number",N);

             else 

                 Console.WriteLine("{0} is even number",N);

        }

    }

}