From 2020/21 to 2023/4, the number of family-blocked donations tripled, leading to an estimated 2,040 "missed opportunities" in 2024 - a 10-year low.
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Publication date: 28 February 2026
// 逻辑：只要左侧元素最小值，说明该元素需纳入无序区间，左边界左移