19 lines
382 B
PHP
19 lines
382 B
PHP
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<?php
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$masses = explode(',', file_get_contents('input.txt'));
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function get_fuel_from_mass($mass)
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{
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return floor($mass / 3) - 2;
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}
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echo array_sum(
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array_map(function($mass) {
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$total_fuel = 0;
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while($mass > 0) {
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$mass = max(get_fuel_from_mass($mass), 0);
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$total_fuel += $mass;
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}
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return $total_fuel;
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}, $masses)
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);
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