Advent of Code Leaderboard 2025 / Day 1

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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	67	31	36	45 days ago
2	CornerMercury	Python	91	43	48	39 days ago
4	N. Adhikary	Python	95	45	50	41 days ago
3	Allan Taylor	Python	95	45	50	45 days ago
5	Benjamin Groves	Python	98	46	52	45 days ago
6	Abbas Moosajee	Python	114	55	59	45 days ago
7	Michael Böiers	Kotlin	117	54	63	44 days ago
8	progheal	C++	127	53	74	44 days ago
9	Hannah Lenk	C++	139	57	82	44 days ago
10	Akke	C	149	74	75	45 days ago
11	Valentin Slawicek	Kotlin	155	61	94	43 days ago
12	Jordan Perry	Python	160	67	93	45 days ago
13	Lafazar	Python	180	82	98	44 days ago
14	Vadzim Kapichenka	Kotlin	189	76	113	43 days ago
15	Norbert Kiesel	Kotlin	201	80	121	45 days ago
16	Olivier Mengué	TypeScript	10090	90	-	39 days ago
17	N. Adhikary	Kotlin	10106	106	-	32 days ago
18	N. Adhikary	Rust	10156	156	-	32 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.