摘要：
Problem DescriptionAssume the coasting is an infinite straight line. Land is in one side of coasting, sea in the other. Each small island is a point locating in the sea side. And any radar installation, locating on the coasting, can only cover d distance, so an island in the sea can be covered by a 阅读全文
posted @ 2013-07-28 19:16
秋心无波
阅读(270)
评论(0)
推荐(0)
浙公网安备 33010602011771号