61 lines
1.5 KiB
PHP
61 lines
1.5 KiB
PHP
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<?php
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$rounds = explode("\n", file_get_contents('./input.txt'));
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$total_score = 0;
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$types = [
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'A' => 'rock',
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'B' => 'paper',
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'C' => 'scissor',
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'X' => 'lose',
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'Y' => 'draw',
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'Z' => 'win',
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];
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$shapes = [
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'rock' => 1,
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'paper' => 2,
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'scissor' => 3,
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];
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foreach ($rounds as $round) {
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[$opponent, $needs_to_end] = explode(' ', $round);
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$opponent = $types[$opponent];
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$needs_to_end = $types[$needs_to_end];
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switch ($needs_to_end) {
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case 'draw':
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$total_score += 3;
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$total_score += $shapes[$opponent];
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break;
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case 'win':
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$total_score += 6;
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switch ($opponent) {
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case 'rock':
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$total_score += $shapes['paper'];
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break;
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case 'paper':
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$total_score += $shapes['scissor'];
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break;
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case 'scissor':
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$total_score += $shapes['rock'];
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break;
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}
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break;
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case 'lose':
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switch ($opponent) {
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case 'rock':
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$total_score += $shapes['scissor'];
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break;
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case 'paper':
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$total_score += $shapes['rock'];
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break;
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case 'scissor':
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$total_score += $shapes['paper'];
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break;
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}
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}
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}
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echo $total_score;
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