2020/day17.py

@@ -1,47 +0,0 @@
-import sys
-from itertools import product
-
-
-def main():
-    lines = [line.rstrip() for line in sys.stdin]
-
-    print("Actives:", solve(lines, 3))
-    print("Hyperactives:", solve(lines, 4))
-
-
-def solve(lines, dimensions):
-    s = {}
-    for y, line in enumerate(lines):
-        for x, c in enumerate(line):
-            p = (x, y) + (0,) * (dimensions - 2)
-            s[p] = 1 if c == "#" else 0
-    for _ in range(6):
-        cycle(s)
-    return sum(s.values())
-
-
-def cycle(s):
-    future = {}
-    work_set = set(nn for pos in s for nn in near(*pos))
-    for pos in work_set:
-        an = 0
-        for nn in near(*pos):
-            an += s.get(nn, 0)
-        if (v := s.get(pos, 0)) == 1 and not 2 <= an <= 3:
-            future[pos] = 0
-        elif v == 0 and an == 3:
-            future[pos] = 1
-    for f, fv in future.items():
-        s[f] = fv
-
-
-def near(*comp):
-    num_comp = len(comp)
-    offsets = list(product([-1, 0, 1], repeat=num_comp))
-    offsets.remove((0,) * num_comp)
-    for p in offsets:
-        yield tuple(c + o for c, o in zip(comp, p))
-
-
-if __name__ == "__main__":
-    main()