beautifulzzzz

摘要： Suppose that we have a square city with straight streets. A map of a city is a square board with n rows and n columns, each representing a street or a... 阅读全文

摘要： DescriptionWilly the spider used to live in the chemistry laboratory of Dr. Petro. He used to wander about the lab pipes and sometimes inside empty on... 阅读全文

摘要： DescriptionIn a wireless network with multiple transmitters sending on the same frequencies, it is often a requirement that signals don't overlap, or ... 阅读全文