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pdf版的题目下载：初赛goo.gl/rfbDY，决赛goo.gl/fNcyY。K题请使用GUN C++提交，用VC/VC++提交会返回RE。

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2_14855_1388296_14066.c: In function `main':
2_14855_1388296_14066.c:22: error: syntax error before '/' token