Le Monde puzzle [#817]
The weekly Le Monde puzzle is (again) a permutation problem that can be rephrased as follows: Find where denotes the set of permutations on {0,…,10} and is defined modulo 11 [to turn {0,...,10} into a torus]. Same question for and for This is rather straightforward to code if one adopts a brute-force approach:: (...
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