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题目描述 Bessie and her sister Elsie graze in different fields during the day, and in the evening they both want to walk back to the barn to rest. Being c 阅读全文
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include include include include include include define db double using namespace std; const int N=1e5+10,M=2 N; int next[M],head[N],go[M],tot; inline 阅读全文
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题目描述 In order to get from one of the F (1 include include include include using namespace std; const int N=5e4+10,M=5e4+10; int next[M],head[N],go[M], 阅读全文
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题目背景 浙江省的几所OI强校的神犇发明了一种人工智能,可以AC任何题目,所以他们决定建立一个网络来共享这个软件。但是由于他们脑力劳动过多导致全身无力身体被♂掏♂空,他们来找你帮助他们。 题目描述 共有n所学校(n include include include include include de 阅读全文