摘要：
You just inherited the rights to N (1 <= N <= 20) previously unreleased songs recorded by the popular group Raucous Rockers. You plan to release a set 阅读全文
摘要：
先丢题面跑： In this problem, `lattice points' in the plane are points with integer coordinates. 在这道题目中，“格点”指的是整点（整数坐标点）。 In order to contain his cows, Farm 阅读全文