Switch to Manhattan distance (L1 norm), and "circles" become squares! Consequently, π for a "Manhattan circle" becomes exactly 4. It highlights how the metric fundamentally reshapes geometry and constants. #ManhattanDistance 3/6

Day 20 - Advent of Code 2024

I just completed "Race Condition" - Day 20 - Advent of Code 2024 #AdventOfCode adventofcode.com/2024/day/20
#shortestpaths #manhattandistance
It all cleared up when I thought about Manhattan distance... part 2 and part 1 are then almost the same.
github.com/jbudynek/adv...