摘要:
[2018 江苏省大学生程序设计大赛] K. 2018 (测试数据范围有扩大) Problem Given a, b, c, d, find out the number of pairs of integers (x, y) where a ≤ x ≤ b, c ≤ y ≤ d and x·y is 阅读全文
摘要:
Background Professor Hopper is researching the sexual behavior of a rare species of bugs. He assumes that they feature two different genders and that 阅读全文