DIGITAL LIBRARY
COMBINATORIAL PROBLEMS OF ENUMERATION IN PROGRAMMING CONTESTS
Kazan Federal University (RUSSIAN FEDERATION)
About this paper:
Appears in: INTED2016 Proceedings
Publication year: 2016
Pages: 510-513
ISBN: 978-84-608-5617-7
ISSN: 2340-1079
doi: 10.21125/inted.2016.1126
Conference name: 10th International Technology, Education and Development Conference
Dates: 7-9 March, 2016
Location: Valencia, Spain
Abstract:
This paper describes a recursive approach to the enumeration of some classes of combinatorial tasks. Most tasks are used in the specific scope of teaching and learning informatics through olympiads and other competitions.

Combinatorial problems can often lead to interesting and beautiful dynamic programming tasks, because they both depend on recurrence relations: formulae that solve a larger problem in terms of one or more smaller problems. Combinatorics of course is not the only branch of mathematics that can yield interesting tasks for programming contests. We focus on it here because many combinatorial problems have entertaining legends and they are easily accessible to students.

Many of the examples in this paper are taken from the Open Cup named after E.V. Pankratiev (Grand-Prix of Tatarstan). Full texts for all of these problems are available on the Internet: www.icl.ru/turnir. We hope that some classes of such tasks would enlarge scope of tasks for use in programming contests at various levels.
Keywords:
Programming contests, informatics olympiads, combinatorial tasks, training.