Advent of Code 2021

$ cargo run -- --help

aoc21 1.0
Smit Soni
Advent of Code 2021

USAGE:
    aoc21 --day <day> --part <part> [INPUT]

FLAGS:
    -h, --help       Prints help information
    -V, --version    Prints version information

OPTIONS:
    -d, --day <day>      Day of the calendar between 1-6
    -p, --part <part>    Which part of the puzzle, 1 or 2

ARGS:
    <INPUT>    File with puzzle input