Computing the Top Element of a Median Pyramid from Base Permutation

Problem Overview A pyramid consists of N levels numbered from top (level 1) to bottom (level N). Each level i contains exactly 2*i - 1 cells arranged in a centered row. The bottommost row (level N) holds a permutation of integers from 1 to 2*N - 1. Values in upper layers are derived by taking the median of three values directly beneath each cel ...

Posted on Sun, 26 Jul 2026 16:12:28 +0000 by raptor1120