Initial commit

2024/19/one.py

@@ -0,0 +1,28 @@
+#!/usr/bin/env python3
+
+import sys
+
+input_file = sys.argv[1]
+
+with open(input_file) as fd:
+    lines = [line.rstrip() for line in fd.readlines()]
+
+towels = set(map(str.strip, lines[0].split(",")))
+patterns = lines[2:]
+
+def possible(pattern: str) -> bool:
+    if not pattern:
+        return True
+    for towel in towels:
+        if pattern.startswith(towel):
+            if possible(pattern[len(towel):]):
+                return True
+    return False
+
+possible_count = 0
+for pattern in patterns:
+    if possible(pattern):
+        possible_count += 1
+
+print(possible_count)
+