Initial commit

.gitignore

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+input
+.stack-work

LICENSE

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+MIT License
+
+Copyright (c) [2025] [Daniele Fucini]
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# Advent of Code 2025
+
+|Day|Stars|Day|Stars|
+|---|-----|---|-----|
+|01 |     |07 |     |
+|02 |     |08 |     |
+|03 |     |09 |     |
+|04 |     |10 |     |
+|05 |     |11 |     |
+|06 |     |12 |     |

Setup.hs

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+import Distribution.Simple
+main = defaultMain

adventofcode2025.cabal

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+cabal-version:       2.2
+
+name:                adventofcode2025
+version:             0.1.0.0
+-- synopsis:
+-- description:
+homepage:            https://git.shouldnt.work/fuxino/AdventOfCode2025
+license:             MIT
+license-file:        LICENSE
+author:              Daniele Fucini
+maintainer:          dfucini@gmail.com
+copyright:           2025 Daniele Fucini
+category:            Web
+build-type:          Simple
+extra-source-files:  README.md
+
+executable adventofcode2025
+  hs-source-dirs:      src
+  main-is:             Main.hs
+  default-language:    Haskell2010
+  build-depends:       base >= 4.7 && < 5
+  ghc-options:         -Wall
+                       -Wcompat
+                       -Widentities
+                       -Wincomplete-record-updates
+                       -Wincomplete-uni-patterns
+                       -Wmissing-export-lists
+                       -Wmissing-home-modules
+                       -Wpartial-fields
+                       -Wredundant-constraints
+  other-modules:
+    Day01

src/Day01.hs

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+module Day01
+  ( day01_1,
+  )
+where
+
+parseInput :: IO [String]
+parseInput = do
+    lines <$> readFile "input/day1.txt"
+
+rotate :: Int -> String -> Int
+rotate n ('L':xs) = (n - read xs) `mod` 100
+rotate n ('R':xs) = (n + read xs) `mod` 100
+rotate n _ = n
+
+getPassword :: Int -> Int -> [String] -> Int
+getPassword pass 0 [] = pass + 1
+getPassword pass _ [] = pass
+getPassword pass 0 (x:xs) = getPassword (pass + 1) (rotate 0 x) xs
+getPassword pass curr (x:xs) = getPassword pass (rotate curr x) xs
+
+day01_1 :: IO ()
+day01_1 = do
+  input <- parseInput
+  let result = getPassword 0 50 input
+  putStrLn $
+    "Day 1, Puzzle 1 solution: "
+    ++ show result

src/Main.hs

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+module Main (main) where
+
+import Day01 (day01_1)
+import System.Environment (getArgs)
+
+main :: IO ()
+main = do
+  args <- getArgs
+  case args of
+    "1" : "1" : _ -> day01_1
+    "1" : _ -> do
+      day01_1
+    "all" : _ -> do
+      day01_1
+    _ -> error "Not implemented"

stack.yaml

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+# This file was automatically generated by 'stack init'
+#
+# Some commonly used options have been documented as comments in this file.
+# For advanced use and comprehensive documentation of the format, please see:
+# https://docs.haskellstack.org/en/stable/configure/yaml/
+
+# A 'specific' Stackage snapshot or a compiler version.
+# A snapshot resolver dictates the compiler version and the set of packages
+# to be used for project dependencies. For example:
+#
+# snapshot: lts-23.14
+# snapshot: nightly-2025-02-15
+# snapshot: ghc-9.8.4
+#
+# The location of a snapshot can be provided as a file or url. Stack assumes
+# a snapshot provided as a file might change, whereas a url resource does not.
+#
+# snapshot: ./custom-snapshot.yaml
+# snapshot: https://example.com/snapshots/2024-01-01.yaml
+snapshot: lts-24.0
+
+# User packages to be built.
+# Various formats can be used as shown in the example below.
+#
+# packages:
+# - some-directory
+# - https://example.com/foo/bar/baz-0.0.2.tar.gz
+#   subdirs:
+#   - auto-update
+#   - wai
+packages:
+- .
+# Dependency packages to be pulled from upstream that are not in the snapshot.
+# These entries can reference officially published versions as well as
+# forks / in-progress versions pinned to a git hash. For example:
+#
+# extra-deps:
+# - acme-missiles-0.3
+# - git: https://github.com/commercialhaskell/stack.git
+#   commit: e7b331f14bcffb8367cd58fbfc8b40ec7642100a
+#
+# extra-deps: []
+
+# Override default flag values for project packages and extra-deps
+# flags: {}
+
+# Extra package databases containing global packages
+# extra-package-dbs: []
+
+# Control whether we use the GHC we find on the path
+# system-ghc: true
+#
+# Require a specific version of Stack, using version ranges
+# require-stack-version: -any # Default
+# require-stack-version: ">=3.5"
+#
+# Override the architecture used by Stack, especially useful on Windows
+# arch: i386
+# arch: x86_64
+#
+# Extra directories used by Stack for building
+# extra-include-dirs: [/path/to/dir]
+# extra-lib-dirs: [/path/to/dir]
+#
+# Allow a newer minor version of GHC than the snapshot specifies
+# compiler-check: newer-minor

stack.yaml.lock

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+# This file was autogenerated by Stack.
+# You should not edit this file by hand.
+# For more information, please see the documentation at:
+#   https://docs.haskellstack.org/en/stable/topics/lock_files
+
+packages: []
+snapshots:
+- completed:
+    sha256: 3f59fb01f884a786c64e247ffe145df5f6045d929b1d2752b5ce768e37fd44e5
+    size: 724510
+    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/24/0.yaml
+  original: lts-24.0