Advent of Code

My answers to https://adventofcode.com written in C++

Test / Compile / Run

• Go to one of the year folder
• Compile with make.
• Run with ./main ([0-9]+)? (runs both examples and the real input to solve)
  • ./main: Run last exercise
  • ./main 6: Run exercise 6
  • ./main 0: Run all

Adding new days

• Add input files in inputs/
• config.txt : For each input, add a line DAYID input_path part1_result part2_result. See Config file for the format
• src/YEAR/days.hpp : add function declaration for dayXX() and add in array the new function declaration.
  • In the recent years, it is now useless as functions are marked as __attribute__ ((weak)) to link missing days with no function.
• Create a src/dayXX.cpp file.

Adding a new year

• Create YEAR/src and YEAR/input folders
• Create main.cpp file (copy another year) and empty the list of days.
• Copy the MAKEFILE from another year
• Create an empty YEAR/src/config.txt file

Config file

The config file lists all the files with inputs, both for examples and for the real input to solve.

Format for each line: Day file ResultForPartA ResultForPartB

Possible values for the result :

• A raw value: It will be considered as a unit test and the given value is expected as an output
• _: This test won't be displayed, and sometimes (depending on the implementation of the day) not ran. It is useful if the input would be too long or isn't suited for a part
• ?: The value is unknown and should be looked for. If a value is specified (?123) and this value isn't returned, this test will be displayed in red instead of blue.
• inline: Multiple unit tests are in the file. The file should follow this format :
  • On odd lines: A one line input
  • On even lines: The unit test results. _ means it is ignored. It is possible to only specify the result of the first part.
• Number\output: Means number will be passed as an extra parameter through DayExtraInfo`. It is used for inputs that only loops several times on the algorithm (for example after 4 operations this example has this result).

License

WTFPL ¯\_( ツ )_/¯

• The used md5 implementation is licensed under the zlib license. See https://create.stephan-brumme.com/hash-library/