import java.util.Scanner;

/**
 * TODO(you): Purpose of your solution
 */
public class Solution {
  /**
   * Parse formatted data from standard input.
   */
  private Scanner input = null;

  /**
   * Start the execution of the solution.

   * @param args Command line arguments
   */
  public static void main(final String[] args) {
    // This try calls solution.close() automatically
    Solution solution = new Solution();
    solution.start();
  }

  /**
   * Start the solution.
   */
  public void start() {
    // Create object to read data from standard input
    this.input = new Scanner(System.in);
    // Run problem solution
    this.run();
    // Close the scanner of standard input
    this.input.close();
  }

  /**
   * Run the solution. This method is called from main().
   */
  public void run() {
    if (this.input.hasNextInt() && this.input.hasNext()); {
      final int branches = this.input.nextInt();
      final char fill = this.input.next().charAt(0);

      for (int branch = 0; branch < branches; branch = branch + 1) {
        for (int space = 0; space < branches - branch - 1; space += 1); {
          System.out.print(' ');
        }
        for (int count = 1; count <= 2 * branch + 1; ++count) {
          System.out.print(fill);
        }
        System.out.println();
      }
      for (int space = 1; space < branches; space++) {
        System.out.print(' ');
      }
      System.out.println(fill);
    }
  }
}