adventofcode/2017/day1/day1.pl
2017-12-28 12:14:51 -05:00

10 lines
120 B
Perl

#!/usr/bin/env perl -n
use 5.20.0;
use List::AllUtils qw/ sum /;
chomp;
$_ .= substr $_, 0, 1;
say sum /(.)(?=\1)/g;