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 Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz 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 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 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 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz 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 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 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 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula 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 66ms 7 May 2022 1st nwellnhof 🇩🇪 1,000 89 83ms 5 Jun 2022 1st snyderek 🇺🇸 1,000 89 77ms 19 Feb 2025 5th m-tkach 🇺🇦 978 91 64ms 5 May 2022 5th 09cf 978 91 81ms 4 Oct 2023 7th Herbert00709 🇵🇱 967 92 85ms 17 Nov 2023 7th 4QT0R 967 92 60ms 23 Nov 2023 7th ovs-code 🇩🇪 967 92 76ms 3 Jun 2024 10th tailorspy 957 93 84ms 27 May 2024 10th sean-niemann 🇺🇸 957 93 81ms 9 Jun 2025 10th KasperKivimaeki 🇫🇮 957 93 56ms 26 Oct 2025 13th michael-pruglo 🇺🇦 947 94 64ms 5 Jul 2022 13th zygoloid 947 94 74ms 5 Aug 2024 15th GolfingSuccess 🇬🇷 937 95 74ms 5 May 2022 15th Alex-x90 🇺🇸 937 95 57ms 4 Dec 2022 15th Mandrzejy 🇵🇱 937 95 67ms 22 Mar 2024 18th Irratix 🇳🇱 927 96 57ms 4 May 2022 18th MeWhenI 🇻🇦 927 96 83ms 1 Jun 2022 18th janbehrens 🇩🇪 927 96 57ms 21 Apr 2023 18th Shanethegamer 🇺🇸 927 96 69ms 15 May 2023 18th Yewzir 🇧🇪 927 96 81ms 11 Nov 2023 18th MateuszPietrzak 🇵🇱 927 96 61ms 18 Nov 2023 18th kkoenig 927 96 59ms 21 Dec 2023 18th BlankSpruce 927 96 85ms 20 Aug 2024 18th fuzzylojik-golf 🇺🇸 927 96 86ms 14 Jun 2025 27th inventshah 918 97 58ms 6 May 2022 27th roupiq 🇵🇱 918 97 55ms 22 Nov 2023 29th shellbertt 🇨🇦 908 98 66ms 9 May 2022 29th iakolzin 908 98 85ms 26 May 2022 29th Betuaredead 908 98 78ms 5 Jan 2023 29th oceko 908 98 73ms 19 Feb 2024 29th dokutan 908 98 81ms 17 Mar 2024 29th cuzdav 908 98 62ms 4 May 2025 29th timhaj 🇸🇮 908 98 82ms 12 Sep 2025 29th Yax42 🇫🇷 908 98 75ms 4 Oct 2025 37th yeminghan2021 899 99 86ms 3 Feb 2025 38th jared-hughes 890 100 69ms 20 Jul 2022 38th ZakkkkAttackkkk 🇵🇭 890 100 71ms 10 Aug 2022 38th Walter225 890 100 70ms 25 Jul 2023 41st CatsAreFluffy 881 101 54ms 18 Feb 2023 41st annaproxy 881 101 70ms 9 May 2023 41st wojtekmal 881 101 78ms 15 Nov 2023 41st HumanoidCPU 881 101 83ms 6 May 2024 41st eMGeeneer 881 101 449ms 27 Jun 2024 41st bac0id 881 101 77ms 29 Jun 2024 41st michaelmoynihan 881 101 508ms 3 Sep 2025 41st snoozingnewt 🇨🇦 881 101 517ms 6 Oct 2025 49th tkr-sh 🇰🇵 873 102 453ms 20 Aug 2022 49th trist224 🇫🇷 873 102 472ms 14 Dec 2022 51st Widgitty 864 103 417ms 1 Sep 2023 51st gjoacorp 🇬🇧 864 103 57ms 4 Aug 2025 51st kellantech 864 103 58ms 14 hours ago 54th LHLaurini 🇧🇷 856 104 66ms 30 Jul 2024 55th YouLookLikeYouNeedAMonkey 840 106 529ms 14 Oct 2022 55th tvcv901 840 106 73ms 22 Mar 2023 57th JStatnekov 832 107 61ms 16 Oct 2022 57th elttil 832 107 78ms 12 Jun 2024 57th ibrahimhanifceker 832 107 67ms 9 Aug 2024 57th CaedenHarper 🇨🇦 832 107 84ms 28 Sep 2025 61st ayushdewan 824 108 74ms 12 Jan 2023 61st thatbirdguythatuknownot 824 108 69ms 12 Jan 2023 61st aksyristos 824 108 89ms 9 Feb 2023 61st matejmatik123 🇸🇰 824 108 1,260ms 26 Sep 2025 61st 6512345 824 108 78ms 8 Nov 2025 66th jorbDehmel 🇺🇸 817 109 56ms 17 Jun 2023 66th madeforlosers 817 109 68ms 8 Nov 2023 66th Blockyheadman 817 109 91ms 6 Nov 2025 69th tpasfieldERAU 809 110 76ms 5 Nov 2022 69th astdefu 809 110 70ms 8 Dec 2022 69th piano-miles 809 110 1,047ms 30 Mar 2023 69th namcartoon06 809 110 67ms 30 Jun 2023 73rd cmayer777 802 111 86ms 28 Sep 2022 73rd billk1729 802 111 1,396ms 19 Oct 2022 75th nandanjp 795 112 75ms 29 Mar 2023 1–75 of 145 Next Last