摘要：
Radar InstallationDescriptionAssume 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 co. 阅读全文
posted @ 2013-04-10 17:37
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