## Optimizing Airspace Closure with respect to Politicians' Egos

When a president is landing at a busy airport, the airspace around the airport closes for commercial traffic. We show how to schedule the presidential squadron so as to minimize its impact on scheduled civilian flights; to obtain an efficient solution we use a ``rainbow'' algorithm recoloring aircraft on the fly as they are stored in a special type of forest. We also give a data structure to answer the following query efficiently: Given the president's ego (the requested duration of airspace closure), when would be the optimal time to close the airspace? Finally, we study the dual problem: Given the time when the airspace closure must start, what is the longest ego that can be tolerated without sacrificing the general traffic? We solve the problem by drawing a Christmas tree in a delay diagram; the tree allows one to solve also the query version of the problem.

keywords: Computational Geometry, Data Structures, Graphs Theory

### Conference Proceedings (peer-reviewed)

Irina Kostitsyna, Maarten Löffler, Valentin Polishchuk

Optimizing Airspace Closure with respect to Politicians' Egos

Proc. 7th International Conference on Fun with Algorithms

LNCS 8496, 264–276, 2014

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