2015 day 1 & 2.

src/holt59/aoc/2015/day1.py

@@ -0,0 +1,10 @@
+import sys
+
+line = sys.stdin.read().strip()
+
+floor = 0
+floors = [(floor := floor + (1 if c == "(" else -1)) for c in line]
+
+
+print(f"answer 1 is {floors[-1]}")
+print(f"answer 2 is {floors.index(-1)}")

src/holt59/aoc/2015/day2.py

@@ -0,0 +1,15 @@
+import sys
+
+import numpy as np
+
+lines = sys.stdin.read().splitlines()
+
+l, w, h = np.array([[int(c) for c in line.split("x")] for line in lines]).T
+
+lw, wh, hl = (l * w, w * h, h * l)
+
+answer_1 = np.sum(2 * (lw + wh + hl) + np.min(np.stack([lw, wh, hl]), axis=0))
+print(f"answer 1 is {answer_1}")
+
+answer_2 = np.sum(l * w * h + 2 * np.min(np.stack([l + w, l + h, h + w]), axis=0))
+print(f"answer 2 is {answer_2}")