😔

makefile

@@ -7,7 +7,7 @@ CODE := $(shell find . -path "./y????/p??.*" -type f | xargs ls -rt | tail -n 1)
 YEAR := $(shell echo ${CODE} | sed 's/[^0-9]/ /g' | cut -d' ' -f4)
 DAY0 := $(shell echo ${CODE} | sed 's/[^0-9]/ /g' | cut -d' ' -f6)
 DATA := ./y${YEAR}/p${DAY0}.dat
-URL := https://adventofcode.com/${YEAR}/day/`echo ${DAY0} | bc`/input
+URL := https://adventofcode.com/${YEAR}/day/`echo ${DAY0} | bc`
 
 pyrun: ${DATA}
 	cat ${DATA} | docker run -v `pwd`:/app/ -w /app/ -i --rm python:latest python -u ./y${YEAR}/p${DAY0}.py
@@ -16,4 +16,9 @@ ${DATA}:
 	# avoid spam in the lead up to the event
 	test ${YEAR}${DAY0} -le `date +%Y%d`
 	# only poll if data isn't yet stored locally
-	test -f ${DATA} || curl -s -b "session=${SESSION}" ${URL} > ${DATA}
+	test -f ${DATA} || curl -s -b "session=${SESSION}" ${URL}/input > ${DATA}
+
+# 	# avoid spam in the lead up to the event
+# 	test ${YEAR}${DAY0} -le `date +%Y%d`
+# 	# only poll if data isn't yet stored locally
+# 	test -f ${DATA} || curl -s $(URL) | tr '\n' '@' | sed -E "s/.+<pre><code>//" | sed -E "s/<\/code><\/pre>.+//" | tr '@' '\n' > $(DATA)

y2023/p06.py

@@ -0,0 +1,19 @@
+import math
+
+
+def combos(record, dist):
+    a, b, c = 1, -record, dist
+    x1, x2 = sorted([
+        (-b + (b ** 2 - 4 * a * c) ** 0.5) / (2 * a),
+        (-b - (b ** 2 - 4 * a * c) ** 0.5) / (2 * a),
+    ])
+    return int(x2) - int(x1)
+
+
+text = open(0).read()
+
+records, distances = [[int(n) for n in line.split()[1:]] for line in text.splitlines()]
+print(math.prod(combos(a, b)for a, b in zip(*[records, distances])))
+
+records, distances = [[int(''.join(line.split()[1:]))] for line in text.splitlines()]
+print(math.prod(combos(a, b)for a, b in zip(*[records, distances])))

y2023/p07.py

@@ -0,0 +1,19 @@
+import collections
+
+
+def strength(hand, order, J_swap='J'):
+    counter = collections.Counter(hand.replace('J', J_swap))
+    count = collections.Counter(counter.values())
+    return [count[n] for n in [5, 4, 3, 2, 1]] + [order.index(k) for k in hand]
+
+
+text = open(0).read()
+data = [ln.split() for ln in text.splitlines()]
+
+order = '123456789TJQKA'
+hands = [(strength(hand, order), hand, score) for hand, score in data]
+print(sum(rank * int(score) for rank, (_, hand, score) in enumerate(sorted(hands), 1)))
+
+order = 'J123456789TQKA'
+hands = [(max(strength(hand, order, J_swap) for J_swap in order[1:]), hand, score) for hand, score in data]
+print(sum(rank * int(score) for rank, (_, hand, score) in enumerate(sorted(hands), 1)))