Question

Diamond

Given an integer value

N, write a program to print a number diamond of 2*N -1 rows as shown below.

Input

The first line of input is an integer

N.

Explanation

In the given example, the number of rows in the diamond is

5.

So, the output should be

. . . . 0 . . . .

. . . 0 0 0 . . .

. . 0 0 0 0 0 . .

. 0 0 0 0 0 0 0 .

0 0 0 0 0 0 0 0 0

. 0 0 0 0 0 0 0 .

. . 0 0 0 0 0 . .

. . . 0 0 0 . . .

. . . . 0 . . . .

Sample Input 1

5

Sample Output 1

. . . . 0 . . . .

. . . 0 0 0 . . .

. . 0 0 0 0 0 . .

. 0 0 0 0 0 0 0 .

0 0 0 0 0 0 0 0 0

. 0 0 0 0 0 0 0 .

. . 0 0 0 0 0 . .

. . . 0 0 0 . . .

. . . . 0 . . . .

Sample Input 2

4

Sample Output 2

. . . 0 . . .

. . 0 0 0 . .

. 0 0 0 0 0 .

0 0 0 0 0 0 0

. 0 0 0 0 0 .

. . 0 0 0 . .

. . . 0 . .

Answer 1

n = int(input())


for i in range(n):
	print(". "*(n-i) + "0 "*(i*2+1) + ". "*(n-i))
for i in range(n-2,-1,-1):
	print(". "*(n-i) + "0 "*(i*2+1) + ". "*(n-i))