The whole algorithm can be expressed in psuedocode like so:
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，这一点在同城约会中也有详细论述
<start_function_callcall:change_background_color。heLLoword翻译官方下载对此有专业解读
Additional Use Cases
That narrowed Lucy's possible address down further - but they didn't want to go door to door, making enquiries. Get the address wrong, and they could risk the suspect being tipped off that he was on the authorities' radar.