using System;

public class Program

{

    public static void Main()

    {

        for (int i = 15; i <= 25; ++i)//1

        {

            for (int j = 15; j <= 25; ++j)//1

            {

                Console.Write(i * j);//1

                Console.Write(" ");//1

            }

            Console.WriteLine();//1

        }

    }

}