同样是美国东部区竞赛题之一,也是本人亲自编写回答的.题目是有2段公路平行,之间有建筑物阻挡视线,你在其中一条上行驶,求可视距离是多少.其中包含TXT文档内资料为建筑物坐标.例20,30即为建筑物坐标在20-30之间,即阻挡了10的可视距离.-Competition is also a problem area, one of the eastern United States, but also personally prepared to answer. The subject is a two stretches of the road parallel to block line of sight between the buildings, you have one on the road, find the number of visual distance. Which includes TXT coordinates for buildings within the document data. 20,30 cases of the building shall be between the coordinates in the 20-30, that blocked the visual distance of 10.