$scores = [
"A X" => 1 + 3,
"A Y" => 2 + 6,
"A Z" => 3 + 0,
"B X" => 1 + 0,
"B Y" => 2 + 3,
"B Z" => 3 + 6,
"C X" => 1 + 6,
"C Y" => 2 + 0,
"C Z" => 3 + 3,
];
$swaps = [
"A X" => "A Z",
"A Y" => "A X",
"A Z" => "A Y",
"B X" => "B X",
"B Y" => "B Y",
"B Z" => "B Z",
"C X" => "C Y",
"C Y" => "C Z",
"C Z" => "C X",
];
// ==================================================
// > PART 1
// ==================================================
$solution_1 = $input->lines->map(fn ($line) => $scores[$line->value])->sum();
// ==================================================
// > PART 2
// ==================================================
$solution_2 = $input->lines->map(fn ($line) => $scores[$swaps[$line->value]])->sum();