字符三角形
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Description
给定一个字符，用它构造一个底边长5个字符，高3个字符的等腰字符三角形。
Format
Input
输入只有一行， 包含一个字符。
Output
该字符构成的等腰三角形，底边长5个字符，高3个字符。
Samples
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Limitation
1s, 64KiB for each test case.