The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Fibonacci in C++ in chars. 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 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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 Chars Time Submitted 81st Re-Adventures 🇮🇳 972 71 78ms 8 Jan 2022 81st MichaelMBradley 🇨🇦 972 71 68ms 21 Mar 2022 81st michael-pruglo 🇺🇦 972 71 60ms 14 Jun 2022 81st solmyr2000 972 71 58ms 18 Jun 2022 81st annaproxy 972 71 71ms 8 Jan 2023 81st southpolenator 972 71 58ms 11 Jun 2023 81st 4QT0R 972 71 65ms 22 Nov 2023 81st MateuszPietrzak 🇵🇱 972 71 76ms 11 Dec 2023 81st mathisfun271 972 71 70ms 19 Feb 2024 81st zygoloid 972 71 78ms 3 Aug 2024 91st BisheruBlade888 958 72 80ms 6 Jan 2022 91st raphaelimahorn 958 72 528ms 3 Oct 2022 91st jhpaques 🇫🇷 958 72 61ms 3 Dec 2022 91st Parma-Jon 958 72 525ms 20 Mar 2023 91st ehulinsky 🇺🇸 958 72 558ms 16 Feb 2024 91st HumanoidCPU 958 72 83ms 16 Mar 2024 91st dokutan 958 72 96ms 13 Jul 2024 91st ReterikHub 958 72 60ms 7 Sep 2024 91st andrewjc2000 958 72 81ms 14 Jul 2025 91st gjoacorp 🇬🇧 958 72 61ms 3 Aug 2025 91st Andrey2001 958 72 54ms 22 days ago 102nd NewDefectus 🇮🇱 945 73 506ms 4 Jan 2022 102nd Heathcorp 🇦🇺 945 73 84ms 31 Mar 2022 102nd sona-tau 945 73 86ms 26 Aug 2023 102nd Natanaelel 🇸🇪 945 73 405ms 4 Apr 2024 102nd madex 🇩🇪 945 73 68ms 9 Jul 2024 102nd LostSyntax21 🇬🇧 945 73 78ms 10 Sep 2024 102nd Lv0Sys 🇵🇱 945 73 78ms 31 May 2025 102nd balloffur 945 73 59ms 11 days ago 110th Gosefu 932 74 79ms 29 Mar 2022 110th trist224 🇫🇷 932 74 464ms 9 Nov 2022 110th veehz 932 74 65ms 21 Feb 2023 110th ngthanhtrung23 932 74 83ms 13 Mar 2024 110th eMGeeneer 932 74 578ms 31 Jul 2024 110th Mukundan314 932 74 638ms 31 May 2025 116th namcartoon06 920 75 71ms 30 Jun 2023 116th Jonatan6 🇩🇰 920 75 58ms 3 Aug 2023 116th RedzGoose 🇦🇺 920 75 407ms 13 Jun 2024 116th wh3n3v3r 🇨🇿 920 75 70ms 15 Nov 2024 116th solisolu 920 75 1,287ms 27 days ago 121st scpchicken 🇵🇼 908 76 442ms 4 Feb 2023 121st klixel 🇨🇦 908 76 418ms 16 Apr 2023 121st nyoshe 908 76 484ms 24 Sep 2023 121st dpethes 908 76 78ms 9 Jan 2024 121st quantomjona 908 76 480ms 15 May 2025 121st Apataras 908 76 84ms 20 Jun 2025 127th 5quiwyrm 896 77 73ms 31 Aug 2022 127th arvidjonasson 896 77 69ms 7 Jun 2025 127th peachey2k2 896 77 71ms 26 days ago 130th simon-biber 885 78 62ms 5 Feb 2022 130th cmayer777 885 78 57ms 6 Jan 2023 130th rqberry 885 78 81ms 8 Mar 2023 130th speles 🇺🇦 885 78 63ms 12 Nov 2023 130th 1231234md5 🇨🇳 885 78 80ms 20 Jan 2024 130th ibrahimhanifceker 885 78 84ms 9 Aug 2024 130th tte0 885 78 70ms 9 Aug 2024 130th desecaw13 885 78 66ms 24 Jan 2025 130th blaztoma 🇱🇹 885 78 67ms 17 Aug 2025 130th matejmatik123 🇸🇰 885 78 1,233ms 26 Sep 2025 130th WildTooth 885 78 65ms 10 Oct 2025 141st osmith93 873 79 68ms 12 Jun 2022 141st Santarii 873 79 76ms 10 Jul 2022 141st kellantech 873 79 71ms 10 Jul 2023 141st dranjohn 873 79 69ms 11 Sep 2023 141st madeforlosers 873 79 73ms 22 Nov 2024 141st myirci 873 79 86ms 15 Jun 2025 147th JGDoerrer 863 80 521ms 14 Jan 2022 147th Adix-null 🇱🇹 863 80 48ms 1 Feb 2024 147th Dpxx 863 80 81ms 6 Aug 2024 147th RobertBurs 863 80 72ms 29 Sep 2025 147th Pyroan 863 80 79ms 20 hours ago 152nd hjcafaroUC 852 81 72ms 25 Aug 2022 152nd nstearns96 🇬🇧 852 81 80ms 15 Dec 2022 152nd retrohun 852 81 83ms 21 Dec 2022 152nd yourlefthandman 852 81 79ms 19 Aug 2023 152nd ivan-on-github 852 81 70ms 13 Nov 2024 152nd Emutis 🇱🇹 852 81 78ms 15 Aug 2025 152nd antonkesy 852 81 78ms 2 Nov 2025 152nd CornerMercury 🇬🇧 852 81 65ms 10 days ago 160th KatieLG 🇬🇧 841 82 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