Perform type manipulations with normal Python functions
This is the same idea behind binary search. In a sorted array, you compare against the middle element and eliminate half the remaining candidates. In a quadtree, you choose one of four quadrants and ignore the other three regions. Each level narrows the search space by a factor of four instead of two.
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US Central Command initially said three soldiers died in the attack, but officials confirmed on Monday the death toll had doubled, after one person succumbed to injuries and two more bodies were found in the rubble.
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3个逻辑学家走进酒吧。酒保问：“你们都要啤酒吗？”