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Rechard_chen
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Bandwidth
Given a graph (V,E) where V is a set of nodes and E is a set of arcs in VxV, and anordering on the elements in V, then the bandwidth of a node v is defined as the maximum distance in the ordering原创 2014-11-21 19:58:24 · 869 阅读 · 0 评论 -
Fabled Rooks
Problem F: Fabled Rooks We would like to placen rooks, 1 ≤ n ≤ 5000, on a n×n board subject to the following restrictionsThe i-th rook can only be placed within the rectangle given by its l原创 2014-11-21 20:19:01 · 1029 阅读 · 0 评论 -
A Spy in the Metro
DescriptionSecret agent Maria was sent to Algorithms City to carry out an especially dangerous mission. After several thrilling events we find her in the first station of Algorithms City Metro,原创 2014-11-21 20:30:24 · 1529 阅读 · 0 评论 -
Not so Mobile
Not so MobileBefore being an ubiquous communications gadget, amobile was just a structure made of strings and wires suspending colourfull things. This kind of mobile is usually found h原创 2014-11-21 20:09:46 · 912 阅读 · 0 评论 -
Send a Table
When participating in programming contests, you sometimes face the following problem: You know how to calcutale the output for the given input values, but your algorithm is way too slow to ever pass t原创 2014-11-21 21:02:45 · 569 阅读 · 0 评论