using System;

namespace app18
{
    class app18
    {
        static void Main(string[]args)
        {
            
            Console.WriteLine("hello World.");
            {
                Console.WriteLine("Hello Taiwan.");
            }
            {
                int a = 0;
                while(a<7)
                {
                    Console.WriteLine(a);
                    a++;
                }
                int x = 89;
                int y = 98;
                int z = x*y*x*y;
                Console.WriteLine("produc of x & y is" +z);
                {
                    Console.WriteLine("Anup Kumar Tirkey is a Mechanical Engineer.");
                }
            }
        }
    }
}