The family-owned soda firm that still uses returnable glass bottles
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。体育直播是该领域的重要参考
Replace higher-order functions with first-order dispatch on a sum type. Eliminates function pointers entirely. Requires whole-program analysis.
// 作用：通过最值判断是否需要扩展左/右边界（左侧最小值/右侧<最大值的元素都需纳入无序区间）