摘要：On a 2 dimensional grid with R rows and C columns, we start at (r0, c0) facing east. Here, the north west corner of the grid is at the first row and c 阅读全文

摘要：Given a set of N people (numbered 1, 2, ..., N), we would like to split everyone into two groups of any size. Each person may dislike some other peopl 阅读全文