Leap Years in C in bytes. Achievements Cheevos Holes Languages Medals Miscellaneous All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Gray Code Decoder Gray Code Encoder Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Gray Code Decoder Gray Code Encoder Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 78th pandapawskat 885 61 1ms 1 Sep 2021 78th tegenton 885 61 1ms 4 Oct 2021 78th ColesHoles 885 61 1ms 4 Oct 2021 78th BroccoliRaab 885 61 1ms 5 Oct 2021 78th ricehens 885 61 1ms 26 Nov 2021 78th shellbertt 🇨🇦 885 61 1ms 3 Dec 2021 78th c0d3-4-F00d 🇩🇪 885 61 1ms 5 Jan 2022 78th Anonymousellama21 885 61 2ms 8 Jun 2022 78th ColeBardin 885 61 1ms 30 Jul 2022 78th biocommando 🇫🇮 885 61 1ms 21 Dec 2022 78th Bmrl7 885 61 1ms 5 Aug 2023 78th Grrisly 885 61 2ms 3 Nov 2023 78th klixel 🇨🇦 885 61 1ms 17 Nov 2023 78th kkoenig 885 61 2ms 30 Dec 2023 78th Yewzir 🇧🇪 885 61 1ms 7 Feb 2024 78th northsuperman 885 61 1ms 31 Mar 2024 78th CaedenHarper 🇨🇦 885 61 1ms 1 Feb 2025 78th TeodorDyakov 🇧🇬 885 61 2ms 13 Jan 2026 78th bac0id 885 61 2ms 27 Jan 2026 78th JOrE20 885 61 2ms 15 Feb 2026 101st ModernTrollfare 871 62 1ms 24 May 2020 101st AbhayAravinda 871 62 1ms 28 Jul 2020 101st ngocbd 🇻🇳 871 62 1ms 23 Sep 2020 101st gastropner 871 62 1ms 23 Dec 2020 101st RYNO8 871 62 1ms 11 Oct 2021 101st Betuaredead 871 62 1ms 4 Jan 2023 101st User2654 871 62 1ms 8 Feb 2023 101st dteague3989 871 62 1ms 26 May 2023 101st HumanoidCPU 871 62 1ms 19 Feb 2024 101st Mandrzejy 🇵🇱 871 62 1ms 22 Feb 2024 101st sjrct 871 62 2ms 4 Aug 2024 101st Garklein 🇨🇦 871 62 1ms 6 Jan 2025 101st mntGiulio 871 62 2ms 25 Mar 2025 101st heanyang1 871 62 1ms 20 Apr 2025 101st iczelia 🇩🇪 871 62 2ms 24 Sep 2025 101st Andrey2001 871 62 2ms 25 Nov 2025 101st Lv0Sys 🇵🇱 871 62 2ms 2 Dec 2025 101st ComradeSquirrel 871 62 2ms 2 days ago 119th daedals 857 63 2ms 1 Jul 2019 119th AkashTandon167 857 63 1ms 26 Oct 2019 119th pkasting 857 63 1ms 6 Sep 2020 119th urojony 🇵🇱 857 63 1ms 26 Dec 2020 119th boxjelly 857 63 1ms 15 Feb 2021 119th Re-Adventures 🇮🇳 857 63 1ms 25 Mar 2021 119th TheHammerBro 857 63 1ms 30 Apr 2021 119th fourth-bit 857 63 1ms 6 Dec 2022 119th aksyristos 857 63 2ms 30 Jan 2023 119th unfinishedprogram 857 63 1ms 21 Jun 2023 119th yzhs 🇩🇪 857 63 1ms 23 Jun 2023 119th keelimeguy 🇺🇸 857 63 2ms 16 May 2025 119th mhgockel 857 63 2ms 21 Jun 2025 132nd Sayan505 🇮🇳 844 64 1ms 23 Feb 2020 132nd taklam 844 64 1ms 20 May 2020 132nd bendapootie 844 64 2ms 9 Jul 2020 132nd heypwesto 🇳🇿 844 64 1ms 20 Apr 2021 132nd Spruill-1 844 64 1ms 2 Nov 2021 132nd jupj 🇫🇮 844 64 1ms 3 Oct 2022 132nd astdefu 844 64 2ms 10 Dec 2022 132nd Sora1248 🇩🇪 844 64 1ms 10 Feb 2023 132nd CatsAreFluffy 844 64 1ms 19 Feb 2023 132nd RealAMC 🇳🇿 844 64 1ms 15 Nov 2023 132nd ndren 844 64 1ms 19 Nov 2023 132nd stellartux 844 64 1ms 27 Dec 2023 132nd roguh 🇬🇹 844 64 1ms 14 Jan 2024 132nd Us1ngTh3Hub 844 64 1ms 2 Apr 2024 132nd Jonatan6 🇩🇰 844 64 1ms 28 Apr 2024 147th YellowBunnyGit 831 65 1ms 5 Apr 2019 147th Serentty 831 65 1ms 31 May 2020 147th shaneliu-zf 🇹🇼 831 65 1ms 6 Jul 2020 147th resetcentral 831 65 1ms 21 May 2022 147th f-tucker 831 65 2ms 4 Jan 2024 147th Mabeloid 🇳🇴 831 65 2ms 14 Oct 2024 147th Efgeen 🇸🇪 831 65 2ms 17 Nov 2025 147th albanian-laundromat 🇺🇸 831 65 1ms 20 Jan 2026 155th citsur 818 66 1ms 9 Jun 2019 155th Alesun 🇮🇹 818 66 1ms 14 Oct 2019 155th AforAmpere 818 66 2ms 15 Jun 2020 155th daschr 818 66 2ms 1 Nov 2020 155th thebuilder6 🇺🇸 818 66 1ms 23 Oct 2021 155th second-pumpkin 818 66 1ms 14 Mar 2023 First Prev 81–160 of 296 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