回型矩阵 - Problem

Problem Q: 回型矩阵

_{[Creator : ]}

Time Limit : 1.000 sec Memory Limit : 128 MiB

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