In: 19th International Workshop on Approximation Algorithms for Combinatorial Optimization Problems, APPROX 2016 and the 20th International Workshop on Randomization and Computation, RANDOM 2016 Leibniz International Proceedings in Informatics, LIPIcs (60) Schloss Dagstuhl Leibniz-Zentrum für Informatik, Dagstuhl, pp. 16:1-16:54. ISSN 1868-8969