2013年9月25日
Colored Sticks
摘要： DescriptionYou are given a bunch of wooden sticks. Each endpoint of each stick is colored with some color. Is it possible to align the sticks in a straight line such that the colors of the endpoints that touch are of the same color?InputInput is a sequence of lines, each line contains two words, sep 阅读全文
posted @ 2013-09-25 15:33 forevermemory 阅读(310) 评论(0) 推荐(0)