18 lines
385 B
PHP
18 lines
385 B
PHP
<?php
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$numbers = array_map('intval', explode("\n", file_get_contents('input.txt')));
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$current_slice = array_sum(array_slice($numbers, 0, 3));
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$count = 0;
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for ($i = 1, $l = count($numbers) - 3; $i <= $l; $i++) {
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$new_slice = array_sum(array_slice($numbers, $i, 3));
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if ($new_slice > $current_slice) {
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$count++;
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}
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$current_slice = $new_slice;
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}
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echo $count; |