The highest building in our city has only one elevator. A request list is made up with N positive numbers. The numbers denote at which floors the elevator will stop, in specified order. It costs 6 seconds to move the elevator up one floor, and 4 seconds to move down one floor. The elevator will stay for 5 seconds at each stop.The highest building in our city has only one e
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1008 Elevator (20 分)（模拟，题目不太好读）_永夜莫明的博客
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