#!/opt/perl/bin/perl

use 5.032;

use strict;
use warnings;
no  warnings 'syntax';

use experimental 'signatures';
use experimental 'lexical_subs';

#
# See ../README.md
#

#
# Run as: perl ch-1.pl < input-file
#

while (<>) {
    chomp;
    my @parts = split /\/+/;
    my @parts2;

    foreach my $part (@parts) {
        next if $part eq "." || $part eq "";
        if ($part eq "..") {
            pop @parts2;
            next;
        }
        push @parts2 => $part;
    }

    say "/" . join "/" => @parts2;
}