using System;

public class Program

{

    public static void Main()

    {

        int sum;

        for (int i=99; i>0; i--)

        {

            for (int y=99; y>0; y--) 

            {

                sum=(i*y);

                string sumStr = Convert.ToString(sum);

​

​

                    if ((sumStr.Length>1)&((sumStr[0])==(sumStr[sumStr.Length-1])))

                        {

                            Console.WriteLine(i + " x " + y + " = " + i*y);

                        }

                    else break;     

            }

        }

​

        //Console.WriteLine("Hello World");

    }

}