⛵

VERSION

@@ -1 +1 @@
-🌋
+⛵

y2023/p15.py

@@ -0,0 +1,27 @@
+import re
+
+
+def hush(string):
+    cv = 0
+    for c in string:
+        cv += ord(c)
+        cv *= 17
+        cv %= 256
+    return cv
+
+
+text = open(0).read()
+ans1 = sum(hush(step) for step in text.replace('\n', '').split(','))
+print(ans1)
+
+
+cases = [[] for _ in range(256)]
+for label, op, val in re.findall(r'(\w+)(=|-)(\d*)', text):
+    box = cases[hush(label)]
+    old = [idx for idx, it in enumerate(box) if it[0] == label]
+    match old, op, int(val or 0):
+        case [idx], '-', 0: box.pop(idx)
+        case [],    '=', n: box.append([label, n])
+        case [idx], '=', n: box[idx] = [label, n]
+ans2 = sum(i * j * lens[1] for i, slots in enumerate(cases, 1) for j, lens in enumerate(slots, 1))
+print(ans2)