Diamond Pattern Printer

Given an integer n, print a diamond shape composed of asterisks (*). The diamond is constructed such that its widest row has n asterisks, and every row is centered. Note that n must be an odd number.

If n is even, the program should output exactly: n must be an odd number (without any additional characters or a newline at the end).

The diamond pattern for an odd number is defined as follows. Let \(m = \lfloor n/2 \rfloor\). For each row \(i\) from \(0\) to \(m\), print \(m-i\) spaces followed by \(2i+1\) asterisks. Then, for each row \(i\) from \(m-1\) down to \(0\), print \(m-i\) spaces followed by \(2i+1\) asterisks.

For example, if \(n=5\), the output (including newlines) should be:

  *
 ***
*****
 ***
  *

inputFormat

The input consists of a single integer n provided via standard input.

outputFormat

For an odd n, output the diamond pattern on standard output, exactly matching the format. For an even n, output the string n must be an odd number with no trailing newline.

## sample

3

 *

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