Now that we can build the tree, let's use it to search. Finding a specific point means starting at the root and asking: which child quadrant contains this coordinate? Then you recurse into that child and ask again. Each level of the tree cuts the search space by roughly three-quarters.
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the 4730, 4731, 4736, 4737, and 4738. These various models were introduced from，更多细节参见搜狗输入法2026