Evacuating Two Robots from a Disk: A Second Cut

  • Yann DisserEmail author
  • Sören SchmittEmail author
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 11639)


We present an improved algorithm for the problem of evacuating two robots from the unit disk via an unknown exit on the boundary. Robots start at the center of the disk, move at unit speed, and can only communicate locally. Our algorithm improves previous results by Brandt et al. [CIAC’17] by introducing a second detour through the interior of the disk. This allows for an improved evacuation time of 5.6234. The best known lower bound of 5.255 was shown by Czyzowicz et al. [CIAC’15].


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Authors and Affiliations

  1. 1.Department of MathematicsTU DarmstadtDarmstadtGermany

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