Xiaoyang's "Ri" Matrix

Problem Description

Xiaoyang wants to construct an $N \times N$ "Ri" matrix (日, the Chinese character for "sun"; $N$ is odd). Specifically, this matrix has $N$ rows, each with $N$ characters. The leftmost column and the rightmost column are both |, while the first row, the last row, and the middle row (the $(\frac{N+1}{2})$-th row) have - for their $2$-nd to $(N-1)$-th characters; all the remaining characters are the half-width lowercase letter x. For example, an $N = 5$ "Ri" matrix is as follows:

|---|
|xxx|
|---|
|xxx|
|---|

Please help Xiaoyang print the corresponding "Ri matrix" for the given $N$.

Input Format

One line containing one integer $N$ ($5 \le N \le 49$, and $N$ is guaranteed to be odd).

Output Format

Output the corresponding "Ri matrix".

Strictly follow the required format: do not add any spaces, punctuation, or other symbols on your own. You must output exactly $N$ lines, each line containing exactly $N$ characters besides the newline — each of which is either -, |, or x. Your output must match the standard answer exactly to get credit; please check carefully before submitting.

Sample Input

Sample Input 1

5

Sample Input 2

7

Sample Output

Sample Output 1

|---|
|xxx|
|---|
|xxx|
|---|

Sample Output 2

|-----|
|xxxxx|
|xxxxx|
|-----|
|xxxxx|
|xxxxx|
|-----|

Sample Explanation

For sample input 1, $N = 5$. The matrix has $5$ rows, each with $5$ characters.

The middle row is the $\frac{5+1}{2} = 3$rd row.

• The $1$st and $5$th rows (first and last): the leftmost and rightmost columns are |, and the middle $3$ characters are -, so it is |---|.
• The $3$rd row (middle): likewise the leftmost and rightmost columns are |, and the middle $3$ characters are -, so it is also |---|.
• The $2$nd and $4$th rows: the leftmost and rightmost columns are |, and the middle $3$ characters are x, so it is |xxx|.

So the output matrix is as shown above.

Constraints

For all test data, $5 \le N \le 49$ and $N$ is odd.