摘要:
据说是作者在家病假蛋疼的产物。 天冷极了,下着雪,又快黑了。这是NOIP的前夜。在这又冷又黑的晚上,一个衣衫破烂的小女孩在机房敲着代码。她从班里逃出来的时候还拿着一本算导,但是有什么用呢?那是一本很破旧的书——那么大,一向是她妈妈垫桌角的。她默写SPFA的时候,年级主任突然冲进机房,吓得她把算导都丢掉了。书叫一个学数竞的捡起来拿着跑了。他说,他可以用那本书当草纸,证明切比雪夫定理。 小女孩... 阅读全文
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Subway tree systemsTime Limit: 1000MSMemory Limit: 10000KTotal Submissions: 6215Accepted: 2590DescriptionSome major cities have subway systems in the form of a tree, i.e. between any pair of stations... 阅读全文
摘要:
BombTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 131072/65536 K (Java/Others)Total Submission(s): 3935 Accepted Submission(s): 1369Problem DescriptionThe counter-terrorists found a time ... 阅读全文
摘要:
Prison rearrangementTime Limit: 3000MSMemory Limit: 10000KTotal Submissions: 2008Accepted: 906DescriptionIn order to lower the risk of riots and escape attempts, the boards of two nearby prisons of eq... 阅读全文