Affiliation: | 1. DEPARTMENT OF COMPUTATION, UNIVERSITY OF THE STATE OF RIO DE JANEIRO, RIO DE JANEIRO, BRAZIL;2. COPPE—SYSTEMS ENGINEERING AND COMPUTER SCIENCE, FEDERAL UNIVERSITY OF RIO DE JANEIRO, RIO DE JANEIRO, BRAZILContract grant sponsors: CNPq, CAPES, FAPERJ, FINEP, and NSERC;3. Contract grant sponsor: Slovak Research and Development Agency;4. Contract grant number: ESF‐EC‐0009‐10;5. Contract grant sponsor: VEGA;6. Contract grant number: 2/0136/12.;7. DEPARTMENT OF COMBINATORICS & OPTIMIZATION, UNIVERSITY OF WATERLOO, WATERLOO, CANADA;8. INSTITUTE OF MATHEMATICS, SLOVAK ACADEMY OF SCIENCES, BRATISLAVA, SLOVAK REPUBLIC |