50 lines
1.0 KiB
Perl
50 lines
1.0 KiB
Perl
use 5.20.0;
|
|
use warnings;
|
|
|
|
use List::AllUtils qw/ before after_incl indexes sum pairs pairmap first /;
|
|
use List::UtilsBy qw/ partition_by max_by /;
|
|
|
|
use experimental qw/
|
|
signatures
|
|
postderef
|
|
/;
|
|
|
|
my @entries = sort <>;
|
|
|
|
say $_ for @entries;
|
|
|
|
my %sleep;
|
|
|
|
my $guard;
|
|
my $start;
|
|
for ( @entries ) {
|
|
if( /#(\d+)/ ) { $guard = $1; }
|
|
elsif( /0?(\d+)\] falls asleep/ ) { $start = $1; }
|
|
elsif( /0?(\d+)\] wakes/ ) {
|
|
push $sleep{$guard}->@*, [ $start, $1 ];
|
|
}
|
|
}
|
|
|
|
use DDP;
|
|
my %nappers = pairmap { $a => sum map { $_->[1] - $_->[0] } @$b } %sleep;
|
|
p %nappers;
|
|
my( $worst ) = map { $_->[0] } max_by { $_->[1] } pairs %nappers;
|
|
|
|
#p $sleep{$worst};
|
|
|
|
say "worst offender: $worst";
|
|
my @x = pairs pairmap { $a => sum map { $_->[1] - $_->[0] } @$b } %sleep;
|
|
|
|
# p @x;
|
|
|
|
my %times = pairmap { $a => scalar @$b } partition_by { $_ } map { $_->[0]..$_->[1]-1 } $sleep{$worst}->@*;
|
|
p %times;
|
|
my ($minute) = map { $_->[0] } max_by { $_->[1] } pairs %times;
|
|
|
|
say $minute;
|
|
|
|
say "$worst, $minute ", $guard * $minute;
|
|
|
|
say $worst * $minute;
|
|
# 51618 is too low
|