#!/usr/bin/perl -w
use warnings;
use strict;
my %seen;
my $n;
foreach (<>) {
$n++ && print
unless $seen{$_}++
}
print "$n \n";
#!/usr/bin/perl -w
use warnings;
use strict;
my %seen;
my $n;
foreach (<>) {
$n++ && print
unless $seen{$_}++
}
print "$n \n";