Advent of Code Leaderboard 2025 / Day 2

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Part 1Part 2PythonRustGoKotlinJavaScriptC#TypeScriptC++JavaCSwiftScalaRubyBash
# Template for reading all lines from stdin and printing the line count to stdout. # Copy this code to your IDE to get started. from sys import stdin lines = stdin.readlines() print(len(lines))
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Leaderboard

	Name	Language	Tokens Sum	Tokens Part 1	Tokens Part 2	Last change
1	Frederik Bonfanti	Ruby	113	56	57	4 days ago
2	N. Adhikary	Python	151	76	75	21 hours ago
3	53142	Python	177	88	89	4 days ago
4	Abbas Moosajee	Python	180	85	95	4 days ago
5	Vadzim Kapichenka	Kotlin	184	82	102	11 hours ago
6	progheal	C++	198	85	113	4 days ago
7	Valentin Slawicek	Kotlin	201	92	109	3 days ago
8	Akke	C	352	159	193	3 days ago
9	Wim Jeantine-Glenn	Python	926	463	463	4 days ago
10	Allan Taylor	Python	10138	138	-	4 days ago

Solutions with 1 unsolved part get a penalty of 10000 tokens (indicated with "-").

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.