Day 10

day10/part1.py

@@ -0,0 +1,17 @@
+#!/usr/bin/env python3
+
+lines = (x.strip() for x in open("input.txt"))
+
+cnt = 0
+OPEN, CLOSE, PENALTY = "([{<", ")]}>", [3, 57, 1197, 25137]
+MAP_CLOSE, MAP_PENALTY = dict(zip(OPEN, CLOSE)), dict(zip(CLOSE, PENALTY))
+for line in lines:
+    stack = []
+    for char in line:
+        if char in OPEN:
+            stack.append(char)
+        elif MAP_CLOSE[stack.pop()] != char:
+            cnt += MAP_PENALTY[char]
+            break
+
+print(cnt)