51 lines
1.6 KiB
Perl
Executable File
51 lines
1.6 KiB
Perl
Executable File
#!/usr/bin/env perl
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# Copyright 2023 Síle Ekaterin Liszka
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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# IN THE SOFTWARE.
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use strict;
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use warnings;
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use feature qw(:5.36);
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use autodie;
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use List::Util qw(reduce);
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open my $fh, '<', 'input.txt';
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my $data = '';
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{
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local $/;
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$data = <$fh>;
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chomp $data;
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}
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my ($time, $distance) = split /\n/, $data, 2;
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$time =~ s/[^0-9]+//g;
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$distance =~ s/[^0-9]+//g;
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sub calc_combos($time, $target) {
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my $ret = 0;
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for my $i (1 .. ($time - 1)) {
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my $travel = ($time - $i) * $i;
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$ret++ if ($travel > $target);
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}
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return $ret;
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}
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say calc_combos($time, $distance);
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