We determine the new state by loading the character in the upper left of the cell and then XORing it with the value $14, which will convert one to the other while preserving lit/unlit status.
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。搜狗输入法2026对此有专业解读
Executed queries: 300000
To build an understanding of performance properties you have to look at the actual thing behind the abstraction and understand how it's implemented.，详情可参考搜狗输入法2026