摘要：
Mike is the president of country What-The-Fatherland. There are n bears living in this country besides Mike. All of them are standing ... 阅读全文
摘要：
DescriptionA histogram is a polygon composed of a sequence of rectangles aligned at a common base line. The rectangles have equal widt... 阅读全文
摘要：
DescriptionBill is developing a new mathematical theory for human emotions. His recent investigations are dedicated to studying how go... 阅读全文
摘要：
DescriptionSome of Farmer John's N cows (1 ≤ N ≤ 80,000) are having a bad hair day! Since each cow is self-conscious about her messy h... 阅读全文