Orthogonal ham-sandwich theorem in R3
SODA '10 Proceedings of the twenty-first annual ACM-SIAM symposium on Discrete Algorithms
Entropy, triangulation, and point location in planar subdivisions
ACM Transactions on Algorithms (TALG)
Dividing a Territory Among Several Vehicles
INFORMS Journal on Computing
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Let P be a simple polygon with m vertices, k of which are reflex, and which contains r red points and b blue points in its interior. Let n = m + r + b. A ham-sandwich geodesic is a shortest path in P between two points on the boundary of P that simultaneously bisects the red points and the blue points. We present an O(n log k)-time algorithm for finding a ham-sandwich geodesic. We also show that this algorithm is optimal in the algebraic computation tree model when parameterizing the running time with respect to n and k.