#!/usr/bin/env perl

use strict;
use warnings;

my @char;

while (<DATA>) {
    @char = split //;
}

comp( \@char );

my $com = "r0a3m4a4j0";
my @com = split //, $com;

dcomp( \@com );

sub dcomp {
    my ($com_ref) = @_;
    my @com = @$com_ref;
    my $car;
    for ( my $aa = 0 ; $aa <= $#com ; $aa++ ) {
        if ( $com[$aa] !~ /\D/ ) {
            print "$car" x ( $com[$aa] );
        }
        else {
            print "$com[$aa]";
            $car = "$com[$aa]";
        }
    }
    print "\n";
}

sub comp {
    my ($char_ref) = @_;
    my @char       = @$char_ref;
    my $cnt        = "";
    for ( my $aa = 0 ; $aa <= $#char ; $aa++ ) {
        if ( $char[ $aa + 1 ] ) {
            if ( $char[$aa] eq $char[ $aa + 1 ] ) {
                $cnt++;
            }
            elsif ($cnt) {
                print "$char[$aa]" . "$cnt";
                undef $cnt;
            }
            else {
                print "$char[$aa]";
            }
        }
    }
    print "\n";
}
__DATA__
raaaammmmmaaaaaj