Here're the problem statements: http://cm2prod.baylor.edu/resources/pdf/2009Problems.pdf (mirrored at http://77.41.63.3/icpc2009/statements/problems.pdf) Here're the standings: http://zibada.ru/pcms/finals/ Here's the SnarkNews coverage: http://acm.math.spbu.ru/~snark/finals/ I'll try to post some analysis here. Problem A. First, we loop over 8! possible orderings for the landing of the planes. Th