2015年2月5日

摘要: 区间选点问题,即数轴上有n个闭区间[l1i, ri],取尽量少的点,使得每个区间内都至少有一个点。The Department of Recreation has decided that it must be more profitable, and it wants to sell advert... 阅读全文

posted @ 2015-02-05 17:43 LLGemini 阅读(292) 评论(0) 推荐(0)