摘要:
P2866 [USACO06NOV]糟糕的一天Bad Hair Day 题目描述 Some of Farmer John's N cows (1 ≤ N ≤ 80,000) are having a bad hair day! Since each cow is self-conscious abo 阅读全文
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P2951 [USACO09OPEN]捉迷藏Hide and Seek 题目描述 Bessie is playing hide and seek (a game in which a number of players hide and a single player (the seeker) at 阅读全文
摘要:
P1550 [USACO08OCT]打井Watering Hole 题目背景 John的农场缺水了!!! 题目描述 Farmer John has decided to bring water to his N (1 <= N <= 300) pastures which are convenien 阅读全文