2017年6月4日
USACO 6.4 Electric Fences
摘要： Farmer John has decided to construct electric fences. He has fenced his fields into a number of bizarre shapes and now must find the optimal place to 阅读全文
posted @ 2017-06-04 09:25 sigongzi 阅读(457) 评论(0) 推荐(0)