#!/usr/bin/perl

open(IN, '<', "cont.fil");
my %fvalues;
while(<IN>){
    if (/(.*) (.*)/){
        $fvalues{$2} = $1;
        print "$fvalues{$2}\n"; # this one prints
    }
}

for($counter = 0 ; $counter < 10 ; $counter++){
    print "$fvalues{$counter}" ; # no output
}
close(IN);