Step through the construction below. Each time a new point is inserted, watch the tree decide whether it needs to split a region:
Less than 40 miles north of San Francisco, the city of Benicia has the quaint ambience of an American small town, where a white gazebo and sign for a community crab bake mark the approach to a vibrant downtown stretch of restaurants, cafes and antique shops.，详情可参考heLLoword翻译官方下载
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Екатерина Щербакова (ночной линейный редактор)
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