天哪，为什么是50分？

P1200 [USACO1.1] 你的飞碟在这儿 Your Ride Is Here

我擦，居然乘上了字符串……
by Joannawang @ 2017-07-12 11:43:25

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已自行解决
by Joannawang @ 2017-07-12 11:44:03

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