摘要：
题目描述 Dearboy, a goods victualer, now comes to a big problem, and he needs your help. In his sale area there are N shopkeepers (marked from 1 to N) ... 阅读全文
2016年1月4日
摘要：
题目描述 On a grid map there are n little men and n houses. In each unit time, every little man can move one unit step, either horizontally, or vertica... 阅读全文
