Codeforces Round#407 Div.2
摘要：
A. Anastasia and pebbles 题面 Anastasia loves going for a walk in Central Uzhlyandian Park. But she became uninterested in simple walking, so she began 阅读全文
posted @ 2017-05-19 13:14 EDGsheryl 阅读(317) 评论(0) 推荐(0)
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