/** Printing a diamond of side n
*/

import java.util.Scanner;

public class Diamond
{
    /** Print n copies of character c */
    public static void printnc(int n, char c) {
	for (int k = 0; k < n; k++)
	    System.out.print(c);
    }

    /** Print a diamond of side n */
    public static void printDiamond(int n) {
	for (int k = 0; k < n; k++) {
	    printnc(n-k-1, ' ');
	    System.out.print('/');
	    printnc(2*k, ' ');
	    System.out.println('\\');
	}
	for (int k = 0; k < n; k++) {
	    printnc(k, ' ');
	    System.out.print('\\');
	    printnc(2*(n-k-1), ' ');
	    System.out.println('/');
	}
    }

    public static void main(String[] args) {
	Scanner scan = new Scanner(System.in);
	System.out.print("Enter an integer: ");
	String line = scan.nextLine().trim();
	int n = Integer.parseInt(line);
	printDiamond(n);
    }
}