.

2025-python/output/day_10.py

@@ -1,4 +1,6 @@
 import re
+import functools
+from math import gcd, inf
 from pprint import pprint
 from collections import deque, Counter, defaultdict
 from heapq import heappop, heappush
@@ -10,21 +12,49 @@ from output import matrix, D, DD, ADJ, ints, sints, mhd, mdbg, vdbg, cw, ccw, bk
 def solve(data):
     r = r"^\[(.+)\] (.+) \{(.+)\}$"
     p1 = 0
+    p2 = 0
     for line in data.splitlines():
-        il, b, _j = re.findall(r, line)[0]
+        il, b, j = re.findall(r, line)[0]
         B = [set(ints(s)) for s in b.split()]
         E = set([i for i, s in enumerate(il) if s == "#"])
-        Q = [(b, set(), 0) for b in B]
-        while Q:
-            b, lit, p = Q.pop(0)
-            if lit == E:
-                p1 += p
-                break
-            for nb in B:
-                if nb == b:
+        j = tuple(ints(j))
+
+        p = 0
+        L = set()
+        while L != E:
+            p += 1
+            for bp in combinations(B, p):
+                L = set()
+                for b in bp:
+                    L = L ^ b
+                    if L == E:
+                        break
+                if L == E:
+                    break
+        p1 += p
+
+        @functools.cache
+        def _press(T):
+            if not any(T):
+                return 0
+            L = set(i for i, s in enumerate(T) if s % 2 == 1)
+            R = inf
+            for p in [bb for ii, bb in enumerate(B) if ii in L]:
+                tt = list(T)
+                for b in p:
+                    for i in b:
+                        tt[i] -= 1
+                if any(j < 0 for j in tt):
                     continue
-                Q.append((nb, lit ^ b, p + 1))
-    p2 = None
+                Th = tuple(j // 2 for j in tt)
+                n = _press(Th)
+                if n is None:
+                    continue
+                R = min(R, len(p) + 2 * n)
+            return R
+
+        p2 = _press(j)
+
     return p1, p2
 
 
@@ -42,17 +72,17 @@ if __name__ == "__main__":
 
     # uncomment to use AoC provided puzzle input
     with open("./input/10.txt", "r") as f:
-        inp = f.read().strip()
+        in_p = f.read().strip()
 
     # uncomment to do initial data processing shared by part 1-2
     p1, p2 = solve(inp)
 
     print(p1)
     os.system(f"echo {p1} | wl-copy")
-    # print(p2)
-    # os.system(f"echo {p2} | wl-copy")
+    print(p2)
+    os.system(f"echo {p2} | wl-copy")
 
     # uncomment and replace 0 with actual output to refactor code
     # and ensure nonbreaking changes
-    # assert p1 == 0
-    # assert p2 == 0
+    # assert p1 == 466
+    # assert p2 == 17214