# Advent of Code 2019 > More info : https://adventofcode.com/2019 ## Usage ``` Advent of Code 2019 0.1 USAGE: advent_of_code_2019 --challenge --input FLAGS: -h, --help Prints help information -V, --version Prints version information OPTIONS: -c, --challenge Challenge id from 1 (1st day, 1st part) to 50 (25th day, 2nd part). -i, --input Input file, ex `input/day1`. ```