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#1585·cp-algorithms

Create article: Parity of a Permutation

Author: gordonlu310Created Jan 12, 2026Updated Jan 13, 2026

Shows up in a number of problems:

CF1585D - Yet Another Sorting Problem (1900)
CF2191B - Quartet Swapping (1800)

For reference:

https://en.wikipedia.org/wiki/Parity_of_a_permutation

Source: cp-algorithms/cp-algorithms

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