import java.util.Scanner;


public class HollowDiamond {
        public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        System.out.print("Please enter a number : ");
        int n = input.nextInt();
        for (int row = 1; row <=n; row++) {
            for (int col = 1; col <=n-row; col++) {
                System.out.print(" ");
            }
            for (int col = 1; col <=row; col++) {
                if(col==row){
                System.out.print("*");
                }
                else{
                    System.out.print(" ");
                }

            }
            for (int col = 2; col <=row; col++) {
                if(row==col){
                    System.out.print("*");
                }
                else{
                    System.out.print(" ");
                }
            }
            System.out.println("");
        }
    }
}