This is quick because it's operating on a very small, localized part of the map.
let prevFleetTime = -Infinity; // 上一个独立车队的到达时间（初始负无穷，保证第一个车被统计）
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Waitrose said it was the first UK supermarket to suspend mackerel sales, adding it would only start selling the fish again once it met their "high sourcing standards".
Where they are almost perversely proper, polite, and put-together, he seems a weary whirlwind, embarrassed to be caught mid-spin. The conflict they encounter is not one of shouting or smashed plates, but swallowed arguments and a shared grief they can't bear to say aloud. So instead, they'll be civil and stay on the surface with small talk. Yet the visual storytelling and nuanced performances Jarmusch knits together allow the audience to probe deeper than these preppy siblings can dare.
We are going to write a function which simulates the recursive functions by creating and modifying StackFrame objects describing the computation as it runs. Consider the tree of function calls which occurs when the recursive functions are invoked; we are representing this exact tree as a data structure which we can traverse and mutate.