2019-07-24から1日間の記事一覧

ABC134 F. Permutation Oddness

F - Permutation OddnessAny permutation can be represented as a permutation. For example, [0,8,3,6,9,7,2,5,1,4] can be drawn as the following graph.The oddness is the sum of the number of edges across over the lines. Let us consider doing D…