adventofcode/05/maze2.pl

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Perl
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2017-12-05 17:47:22 +00:00
use 5.20.0;
my @maze = <>;
my $position = 0;
my $steps = 0;
while( $position < @maze ) {
$steps++;
my $i = $position;
$position += $maze[$position];
$maze[$i] += $maze[$i] > 2 ? -1 : 1;
}
say $steps;