Spiral Matrix Generator

Given an integer \( N \) (where \( 1 \leq N \leq 100 \)), your task is to generate an \( N \times N \) matrix filled with the integers from 1 to \( N^2 \) in a spiral order. The spiral starts at the top-left corner and moves to the right initially.

For example, when \( N = 3 \), the output should be:

1 2 3
8 9 4
7 6 5

If the given \( N \) is less than or equal to 0, output nothing.

inputFormat

The input consists of a single integer \( N \) on the first line representing the size of the matrix.

outputFormat

Output the \( N \times N \) spiral matrix. Each row should be printed on a separate line with the numbers separated by a single space. If \( N \le 0 \), output nothing.

## sample

1

1

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