摘要：
Paint PearlsProblem DescriptionLee has a string of n pearls. In the beginning, all the pearls have no color. He plans to color the pearls to make it m... 阅读全文
摘要：
EllipsoidProblem DescriptionGiven a 3-dimension ellipsoid(椭球面)your task is to find the minimal distance between the original point (0,0,0) and points ... 阅读全文