Day 18

day18/part1.py

@@ -0,0 +1,16 @@
+#!/usr/bin/env python3
+import numpy as np
+
+lines = (x.strip() for x in open("input.txt"))
+cnt = 0
+matches = 0
+cubes = set()
+
+for line in lines:
+    x, y, z = map(int, line.split(","))
+    matches += sum((x+nx*s, y+ny*s, z+nz*s) in cubes for s in (1, -1) for nx, ny, nz in ((1, 0, 0), (0, 1, 0), (0, 0, 1)))
+    cnt += 1
+    cubes.add((x, y, z))
+
+print(matches, cnt, len(cubes))
+print(len(cubes)*6-matches*2)