G. 对顶矩阵

Type: Default

1000ms

256MiB

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对顶矩阵

给定一个整数 $n$ ，输出两个直角边长为 $n$ 的等腰直角三角矩阵，两个矩阵呈上下对顶状态。

例如当 $n=3$ 时，输出

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

$1 \leq n \leq 100$ 。