73 lines
1.8 KiB
Perl
73 lines
1.8 KiB
Perl
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use 5.20.0;
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use Path::Tiny;
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use Algorithm::Combinatorics qw/ combinations /;
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use List::AllUtils qw/ sum max /;
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use 5.20.0;
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use experimental 'postderef';
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my @weapons = (
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#Weapons: Cost Damage Armor
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[ qw/ Dagger 8 4 0 / ],
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[ qw/ Shortsword 10 5 0/ ],
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[ qw/ Warhammer 25 6 0/ ],
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[ qw/ Longsword 40 7 0/ ],
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[ qw/ Greataxe 74 8 0/ ],
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);
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my @armors = (
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#Armor: Cost Damage Armor
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[ qw/ Leather 13 0 1/ ],
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[ qw/ Chainmail 31 0 2/ ],
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[ qw/ Splintmail 53 0 3/ ],
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[ qw/ Bandedmail 75 0 4/ ],
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[ qw/ Platemail 102 0 5/ ],
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);
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my @rings = (
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#Rings: Cost Damage Armor
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[ qw/ Damage+1 25 1 0/ ],
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[ qw/ Damage+2 50 2 0/ ],
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[ qw/ Damage+3 100 3 0/ ],
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[ qw/ Defense+1 20 0 1/ ],
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[ qw/ Defense+2 40 0 2/ ],
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[ qw/ Defense+3 80 0 3/ ],
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);
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my @boss = map { /(\d+)/ } path('input.txt')->lines;
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use DDP;
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p @boss;
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my $min_price = 1E9;
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for my $weapon ( @weapons ) {
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for my $armor ( [], @armors ) {
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for my $rings( [[]], ( map { [ $_ ] } @rings ), combinations( \@rings, 2 ) ) {
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my $price = sum map { $_->[1] } $weapon, $armor,
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$rings->@*;
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next if $price > $min_price;
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my @stats = ( 100, map { my $i = $_; sum map { $_->[$i] } $weapon, $armor, $rings->@* } 2,3 );
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$min_price = $price if win_fight( \@stats, [ @boss ] );
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}
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}
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}
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say $min_price;
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use experimental 'signatures';
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sub win_fight( $me, $opponent ) {
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p @_;
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my $damage = max 1, $me->[1] - $opponent->[2];
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$opponent->[0] -= $damage;
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return 1 if $opponent->[0] <= 0;
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return not win_fight( reverse @_ );
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}
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