摘要：
A Knight's JourneyTime Limit:1000MSMemory Limit:65536KTotal Submissions:14310Accepted:4766DescriptionBackgroundThe knight is getting bored of seeing the same black and white squares again and again and has decided to make a journeyaround the world. Whenever a knight moves, it is two squares in o 阅读全文
摘要：
Colored SticksTime Limit:5000MSMemory Limit:128000KTotal Submissions:19454Accepted:5083DescriptionYou 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 阅读全文