using System;

public class Program

{

    public static void Main()

    {

        var n = 10; // so hang //

        var m = 20; // so cot  //

        for(var i=0;i<n;i++){

            for(var j=0;j<m;j++){

                if(i % (n-1) == 0 || i % (n-1) != 0 && j % (m-1) == 0){

                    Console.Write("*");

                }else{

                    Console.Write(" ");

                }

            }

            Console.Write("\n");

        }

    }

}