The Baked Good Quadrant: The items here are only breakfasts by convention. Any of them could be served at other meals, and often are.
公式： f(x)=max(0,x)
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Виктория Кондратьева (Редактор отдела «Мир»)，更多细节参见快连下载安装
定弹出条件：看题目要的是「第一个 / ≥ / < / ≤ cur」，对照上文的弹出条件对应法则决定弹谁。