Environment is a linked list of frames. Shares structure between closures. More allocation, slower access.
// ⚠️ 易错点5：循环范围写错（比如i<right或ileft），导致最值计算不全
。关于这个话题，下载安装汽水音乐提供了深入分析
changes only a few letters in the output:
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В Москве прошла самая снежная зима14:52