摘要：
以前写过，现在的码风与以前有些变化，主要是用数组模拟邻接表存图，以前是用指针存图。 以前的博文:http://www.cnblogs.com/Currier/p/6387732.html 洛谷可评测。 传送门：https://www.luogu.org/problem/show?pid=3381 阅读全文
摘要：
Description Georgia and Bob decide to play a self-invented game. They draw a row of grids on paper, number the grids from left to right by 1, 2, 3, .. 阅读全文
摘要：
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