#!/usr/bin/perl

use strict;

@ARGV != 1 and die "Expected at least one argument\n";

my $installed_list = $ARGV[0];  shift;

open(my $fh, "<", $installed_list) or die "Couldn't open($installed_list)\n";

my %installed;

for (<$fh>) {
    chomp;
    s/:.*//;
    $installed{$_}++;
}

close $fh;

my $name;
for (<>) {
    m/^([^ ]+) / or do {
        print;
        next;
    };

    $name = $1;
    $installed{$name} and print "I ";
    print;
}