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For example, a 500km route might be broken down into ~100 such shortcuts. If each A* shortcut calculation explores 100-1000 detailed road segments, the total detailed segments visited by A* might be around 10,000-50,000. Compare this to the 1,000,000+ segments the old A* might have needed for the entire route!，更多细节参见51吃瓜
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Instead, Google's "see more" suggestion using the racial slur stemmed from a failure within its safety features for push notifications, or alerts that come through as text on a user's phone or device.