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Advent of Code Leaderboard 2024 / Day 9

View puzzle on adventofcode.com

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Leaderboard

Name Language Tokens Sum Tokens Part 1 Tokens Part 2 Last change
1 Profile imageCornerMercury Python 290 145 145 38 days ago
2 Profile imagedbasden Python 307 137 170 38 days ago
3 Profile imageMechazawa JavaScript 10143 143 - 37 days ago

Rules

  • You're welcome to participate alone or in a team.
  • You may submit multiple solutions and explore different programming languages.
  • Stick to the standard library of your language, no further dependencies/libraries, except the ones which OneCompiler provides (e.g. NumPy for Python).
  • Ensure your code aligns to the template (Python, Rust, Go, Kotlin, JavaScript, C#, TypeScript, C++, Java, C, Swift, Scala, Ruby, Bash), reading the puzzle input from stdin (terminated with end-of-file), and printing the solution to stdout.
  • Please refrain from making network requests, reading data from files, or storing data in variable/function/class names for reflection.
  • Your code must be able to process all valid Advent of Code inputs. Golfcoder might reevaluate correctness of your solution with different inputs after your submission.

137 tokens in Python for part 1 by dbasden

Download solution

importsys
fat=[int(c)forcinsys.stdin.read().strip()]

blockmap=[None]*sum(fat)
pos=0
fori,blocksinenumerate(fat):
if(i&1)==0:
fileid=i>>1
blockmap[pos:pos+blocks]=[fileid]*blocks
pos+=blocks

whileTrue:
whileblockmap[-1]isNone:
blockmap.pop()
try:
next_free=blockmap.index(None)
exceptValueError:
break
blockmap[next_free]=blockmap.pop()

print(sum(a*bfora,binenumerate(blockmap)))