Collatz 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 1st Lydxn 🇨🇦 1,000 89 61ms 6 May 2022 1st JayXon 🇺🇸 1,000 89 64ms 7 May 2022 1st nwellnhof 🇩🇪 1,000 89 58ms 5 Jun 2022 1st snyderek 🇺🇸 1,000 89 60ms 19 Feb 2025 5th m-tkach 🇺🇦 978 91 61ms 5 May 2022 5th 09cf 978 91 62ms 4 Oct 2023 5th Herbert00709 🇵🇱 978 91 67ms 45 hours ago 8th 4QT0R 967 92 61ms 23 Nov 2023 8th ovs-code 🇩🇪 967 92 63ms 3 Jun 2024 10th tailorspy 957 93 55ms 27 May 2024 10th sean-niemann 🇺🇸 957 93 62ms 9 Jun 2025 10th KasperKivimaeki 🇫🇮 957 93 67ms 26 Oct 2025 13th michael-pruglo 🇺🇦 947 94 64ms 5 Jul 2022 13th zygoloid 947 94 62ms 5 Aug 2024 13th AdrienHache 🇫🇷 947 94 60ms 27 Dec 2025 16th GolfingSuccess 🇬🇷 937 95 62ms 5 May 2022 16th Alex-x90 🇺🇸 937 95 64ms 4 Dec 2022 16th Mandrzejy 🇵🇱 937 95 59ms 22 Mar 2024 16th roupiq 🇵🇱 937 95 65ms 45 hours ago 20th Irratix 🇳🇱 927 96 60ms 4 May 2022 20th MeWhenI 🇻🇦 927 96 62ms 1 Jun 2022 20th janbehrens 🇩🇪 927 96 58ms 21 Apr 2023 20th Shanethegamer 🇺🇸 927 96 62ms 15 May 2023 20th Yewzir 🇧🇪 927 96 71ms 11 Nov 2023 20th MateuszPietrzak 🇵🇱 927 96 63ms 18 Nov 2023 20th kkoenig 927 96 62ms 21 Dec 2023 20th BlankSpruce 927 96 62ms 20 Aug 2024 20th fuzzylojik-golf 🇺🇸 927 96 66ms 14 Jun 2025 20th dokutan 927 96 91ms 8 Feb 2026 30th inventshah 918 97 58ms 6 May 2022 30th emgordon154 918 97 60ms 8 Feb 2026 32nd shellbertt 🇨🇦 908 98 59ms 9 May 2022 32nd iakolzin 908 98 64ms 26 May 2022 32nd Betuaredead 908 98 62ms 5 Jan 2023 32nd oceko 908 98 58ms 19 Feb 2024 32nd cuzdav 908 98 61ms 4 May 2025 32nd timhaj 🇸🇮 908 98 64ms 12 Sep 2025 32nd Yax42 🇫🇷 908 98 67ms 4 Oct 2025 32nd liamjermy6 908 98 64ms 19 days ago 40th yeminghan2021 899 99 57ms 3 Feb 2025 41st jared-hughes 890 100 63ms 20 Jul 2022 41st ZakkkkAttackkkk 🇵🇭 890 100 63ms 10 Aug 2022 41st Walter225 890 100 62ms 25 Jul 2023 44th CatsAreFluffy 881 101 62ms 18 Feb 2023 44th annaproxy 881 101 62ms 9 May 2023 44th wojtekmal 881 101 69ms 15 Nov 2023 44th HumanoidCPU 881 101 64ms 6 May 2024 44th eMGeeneer 881 101 416ms 27 Jun 2024 44th bac0id 881 101 63ms 29 Jun 2024 44th michaelmoynihan 881 101 433ms 3 Sep 2025 44th snoozingnewt 🇨🇦 881 101 458ms 6 Oct 2025 52nd tkr-sh 🇰🇵 873 102 442ms 20 Aug 2022 52nd trist224 🇫🇷 873 102 437ms 14 Dec 2022 54th Widgitty 864 103 421ms 1 Sep 2023 54th gjoacorp 🇬🇧 864 103 59ms 4 Aug 2025 54th kellantech 864 103 56ms 16 Dec 2025 57th LHLaurini 🇧🇷 856 104 61ms 30 Jul 2024 57th zzz13579zzz 856 104 62ms 29 Jan 2026 59th Nwo5-trg 848 105 67ms 4 Feb 2026 60th YouLookLikeYouNeedAMonkey 840 106 445ms 14 Oct 2022 60th tvcv901 840 106 64ms 22 Mar 2023 62nd JStatnekov 832 107 62ms 16 Oct 2022 62nd elttil 832 107 67ms 12 Jun 2024 62nd ibrahimhanifceker 832 107 64ms 9 Aug 2024 62nd CaedenHarper 🇨🇦 832 107 62ms 28 Sep 2025 62nd CoderColby 832 107 1,390ms 14 days ago 67th ayushdewan 824 108 64ms 12 Jan 2023 67th thatbirdguythatuknownot 824 108 65ms 12 Jan 2023 67th aksyristos 824 108 65ms 9 Feb 2023 67th matejmatik123 🇸🇰 824 108 1,478ms 26 Sep 2025 67th 6512345 824 108 64ms 8 Nov 2025 67th Shengxuan-Zhang 824 108 63ms 20 Feb 2026 73rd jorbDehmel 🇺🇸 817 109 59ms 17 Jun 2023 73rd madeforlosers 817 109 61ms 8 Nov 2023 73rd Blockyheadman 817 109 64ms 6 Nov 2025 73rd samuel-thesing 🇩🇪 817 109 1,359ms 28 Jan 2026 77th tpasfieldERAU 809 110 56ms 5 Nov 2022 77th astdefu 809 110 63ms 8 Dec 2022 77th piano-miles 809 110 1,605ms 30 Mar 2023 77th namcartoon06 809 110 65ms 30 Jun 2023 1–80 of 159 Next Last