DMTCS is a high standard peer-reviewed publication devoted to rapid publication of innovative research which covers discrete mathematics and theoretical computer science. DMTCS is distributed freely and only in electronic form. DMTCS is published by the Maison de l'Informatique et des Mathématiques Discrètes (MIMD) in cooperation with the Laboratoire Lorrain de Recherche en Informatique et ses Applications (LORIA) in Nancy, France, and the Laboratoire d'Informatique Algorithmique: Fondements et Applications (LIAFA) in Paris, France.