65 lines
1.2 KiB
Perl
65 lines
1.2 KiB
Perl
|
package part1;
|
||
|
|
|
||
|
|
use 5.34.0;
|
||
|
|
use warnings;
|
||
|
|
use experimental 'signatures';
|
||
|
|
|
||
|
|
use Path::Tiny;
|
||
|
|
use List::AllUtils qw/ natatime any sum all sum0/;
|
||
|
|
|
||
|
|
sub readFile($file) {
|
||
|
|
my @lines = path($file)->lines;
|
||
|
|
|
||
|
|
my @balls = split ',', shift @lines;
|
||
|
|
my $it = natatime 5, map { [split] } grep { /\d/ } @lines;
|
||
|
|
|
||
|
|
my @cards;
|
||
|
|
while( my @next = $it->() ) { push @cards, \@next }
|
||
|
|
|
||
|
|
return {
|
||
|
|
balls => \@balls,
|
||
|
|
cards => \@cards,
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
sub has_line($n,$card) {
|
||
|
|
return all { $_ == -1} $card->[$n]->@*;
|
||
|
|
}
|
||
|
|
|
||
|
|
sub has_column($n,$card) {
|
||
|
|
return all { $_ == -1 } map {$_->[$n]} @$card;
|
||
|
|
}
|
||
|
|
|
||
|
|
sub score( $n, $card ) {
|
||
|
|
return $n * sum map { sum0 grep { $_ > 0 } @$_ } @$card;
|
||
|
|
}
|
||
|
|
|
||
|
|
sub victory ($number, $card) {
|
||
|
|
for ( 0..4 ) {
|
||
|
|
if ( has_line($_,$card) or has_column($_,$card) ) {
|
||
|
|
return score($number,$card);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
sub solution($balls, $cards) {
|
||
|
|
|
||
|
|
my $number = shift @$balls;
|
||
|
|
|
||
|
|
for my $card ( @$cards ) {
|
||
|
|
for my $row ( @$card ) {
|
||
|
|
$row = [ map { $_ == $number ? -1 : $_ } @$row ];
|
||
|
|
}
|
||
|
|
|
||
|
|
if( my $score = victory($number,$card) ) {
|
||
|
|
return $score;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
goto &solution;
|
||
|
|
}
|
||
|
|
|
||
|
|
1;
|