https://leetcode-cn.com/problems/design-a-stack-with-increment-operation/
有一份航班预订表 bookings ,表中第 i 条预订记录 bookingsi = firsti, lasti, seatsi 意味着在从 firsti 到 lasti (包含 firsti 和 lasti )的 每个航班 上预订了 seatsi 个座位。...