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2016年7月17日

摘要: Farmer John wants to repair a small length of the fence around the pasture. He measures the fence and finds that he needsN (1 ≤ N ≤ 20,000) planks of 阅读全文
posted @ 2016-07-17 23:04 见字如面 阅读(243) 评论(0) 推荐(1) 编辑
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