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PAT-A 1154 Vertex Coloring
A proper vertex coloring is a labeling of the graph's vertices with colors such that no two vertices sharing the same edge have the same color. A coloring using at most k colors is called a (proper) k...原创 2018-12-16 09:02:56 · 369 阅读 · 0 评论 -
PAT-A 1153 Decode Registration Card of PAT
A registration card number of PAT consists of 4 parts: the 1st letter represents the test level, namely, T for the top level, A for advance and B for basic; the 2nd - 4th digits are the test site nu...原创 2018-12-16 09:15:32 · 387 阅读 · 0 评论 -
PAT-A 1152 Google Recruitment
In July 2004, Google posted on a giant billboard along Highway 101 in Silicon Valley (shown in the picture below) for recruitment. The content is super-simple, a URL consisting of the first 10-d...原创 2018-12-11 22:57:09 · 504 阅读 · 2 评论