phroggyy · December 2, 2015 09:02
diff --git a/adventofcode-day2.php b/adventofcode-day2.php
 <?php
 array_walk($x=file('i'),function(&$g) {
 	$g=explode('x', $g);
 	sort($g, SORT_NUMERIC);
 });

 $p = $r = 0;
 foreach ($x as $g) {
 	$p += 2*($g[0]*$g[1] + $g[0]*$g[2] + $g[1]*$g[2]) + $g[0]*$g[1];
 	$r += 2*($g[0]+$g[1])+array_product($g);
 }
 echo "paper: $p\nribbon: $r\n";
	<?php
	array_walk($x=file('i'),function(&$g) {
	$g=explode('x', $g);
	sort($g, SORT_NUMERIC);
	});

	$p = $r = 0;
	foreach ($x as $g) {
	$p += 2($g[0]$g[1] + $g[0]$g[2] + $g[1]$g[2]) + $g[0]*$g[1];
	$r += 2*($g[0]+$g[1])+array_product($g);
	}
	echo "paper: $p\nribbon: $r\n";