do you like pre-stuff?

.gitattributes

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+gettoday merge=ours

.gitignore

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+*.sw?
+aids
+__pycache__/
+tmp
+a.out
+response*
+*.hi
+*.o
+cookie
+tags
+22

1

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+#!/usr/bin/env bash
+year=$(date +%Y)
+day=$(date +%d | sed 's/^0//')
+case $# in
+    2)
+        year=$2
+        day=$1
+        specifyyear=_$year;;
+    1)
+        day=$1
+esac
+
+curl "https://adventofcode.com/$year/day/$day/answer" -X POST -H "Cookie: session=$(cat cookie)" --data-raw "level=1&answer=$(sed 1q)"

2

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+#!/usr/bin/env bash
+year=$(date +%Y)
+day=$(date +%d | sed 's/^0//')
+case $# in
+    2)
+        year=$2
+        day=$1
+        specifyyear=_$year;;
+    1)
+        day=$1
+esac
+
+curl "https://adventofcode.com/$year/day/$day/answer" -X POST -H "Cookie: session=$(cat cookie)" --data-raw "level=2&answer=$(sed -n 2p\;2q)"

README.md

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+# Advent of Code 2023 solutions
+
+A set of 25 puzzle inputs and 50 puzzle solutions, two for each day. Most can
+be solved in minutes.  The puzzles can be found
+[here](https://adventofcode.com/2023/), although only the first one for each
+day is visible until you solve it.
+
+Most solutions output at most two lines, the answers to part 1 and 2; but some
+provide more information in the form of e.g. graphics.
+
+Run a solution by passing the puzzle input to the program.

gettoday

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+#!/usr/bin/env bash
+year=$(date +%Y)
+day=$(date +%d | sed 's/^0//')
+case $# in
+    2)
+        year=$2
+        day=$1
+        specifyyear=_$year;;
+    1)
+        day=$1
+esac
+
+file=input$day$specifyyear
+
+curl -s -o "$file" -H "Cookie: session=$(cat cookie)" \
+    "https://adventofcode.com/$year/day/$day/input"
+
+git add "$file"

useful.py

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+#!/usr/bin/env python3
+from functools import cache, reduce
+from itertools import permutations, product, combinations, pairwise, groupby, takewhile
+from more_itertools import batched, sliding_window
+from collections import defaultdict, deque
+import re, sys
+import math
+import numpy as np
+import cv2 as cv
+from icecream import ic
+import torch.nn.functional as F
+from copy import deepcopy
+
+def commaline(line):
+    return [int(n) for n in line.strip().split(',')]
+
+def headerfooter(f):
+    return f.read().split('\n\n', maxsplit=1)
+
+def pgphs(text):
+    return text.strip().split('\n\n')
+
+def hfl(f): # header footer lines
+    return [p.strip().split('\n') for p in headerfooter(f)]
+
+def numbers(l): # usually what we want really
+    return [int(x) for x in re.findall(r'-?[0-9]+', l)]
+
+def lines(f):
+    return [l.strip() for l in f.readlines()]
+
+def dprint(*args):
+    sep = False
+    for arg in args:
+        if sep:
+            print('--------')
+        sep = True
+        for a, b in arg.items():
+            print('%10s: %s' % (a, ','.join(b)))
+    print()