Advent of code
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Some tips to solve https://adventofcode.com/.
Get input.txt
A Makefile rule:
YEAR=2024
input.txt: ../cookie.txt
DAY=$$(basename $$(pwd)); wget -O $@ --header="Cookie: $$(cat ../cookie.txt)" https://adventofcode.com/$(YEAR)/day/$${DAY##day}/input
Get content of ../cookie.txt (collect using Firefox developers / storage panel):
session=aaaaaaaaaaaaaabbbbbbbbbbbbbbcccccccccccccddddddddddde1111111222222222333333333444444444555555555555
I/O
Read a list of numbers
| Code | Output |
|---|---|
print("Input:")
for line in open(INPUT):
print(line.strip())
|
Input:
3 4
4 3
2 5
1 3
3 9
3 3
|
F=[] # Flat
for line in open(INPUT):
numbers = list(map(int,line.split()))
F.extend(numbers)
print(f"{F}")
|
[3, 4, 4, 3, 2, 5, 1, 3, 3, 9, 3, 3]
|
L=[] # List
for line in open(INPUT):
numbers = list(map(int,line.split()))
L.append(numbers)
print(f"{L}")
|
[[3, 4],
[4, 3],
[2, 5],
[1, 3],
[3, 9],
[3, 3]]
|
Read a list of miscellaneous data
See also:
| Code | Output |
|---|---|
# Input:
# ------
# ABC 3 FGH 4
# IZP 4 XYZ 3
# KIJ 2 FGH 5
# ABC 1 TYE 3
# FIS 3 FGH 9
# ABC 3 FGH 3
INPUT2='small2.txt'
L = []
for line in open(INPUT2):
matches = re.findall(r'([A-Z]+|\d+)',line)
L.append(matches)
print(f"{L}")
|
[['ABC', '3', 'FGH', '4'],
['IZP', '4', 'XYZ', '3'],
['KIJ', '2', 'FGH', '5'],
['ABC', '1', 'TYE', '3'],
['FIS', '3', 'FGH', '9'],
['ABC', '3', 'FGH', '3']]
|
# Input:
# Button A: X+27, Y+18
# Button B: X+17, Y+44
# Prize: X=8105, Y=9698
with open(INPUT) as f:
while True:
x_a,y_a=list(map(int,re.findall(r'Button A: X\+(\d+), Y\+(\d+)',f.readline())[0]))
x_b,y_b=list(map(int,re.findall(r'Button B: X\+(\d+), Y\+(\d+)',f.readline())[0]))
X,Y=list(map(int,re.findall(r'Prize: X=(\d+), Y=(\d+)',f.readline())[0]))
print(x_a,y_a)
print(x_b,y_b)
print(X,Y)
if not f.readline():
break
|
27 18
17 44
8105 9698
|
# Input:
# 5,4
# 4,2
# 4,5
# 3,0
# 2,1
# Read the whole thing and extract only numbers, then reorg...
bytes = list(map(int,re.findall(r'\d+',open(INPUT).read())))
bytes = [(bytes[i],bytes[i+1]) for i in range(0,len(bytes),2)]
print(bytes)
|
[(5, 4), (4, 2), (4, 5), (3, 0), (2, 1)]
|