#!/usr/bin/perl

use strict;

my @thing;
my @thing1;
my $test=0;    
my ($i,$j,$k,$arg1,$arg2);

while(my $argv=shift){
if($test==0){
    $arg1=$argv;
    }
if($test>0){
    $arg2=$argv;
    }
        
    for($i=1;$i<=$argv;$i++){
        if(!($argv%$i)){

     if($test==0){
  @thing[$i]=$i;
  }
     if($test>0){
  @thing1[$i]=$i;
  }
  
     }
 }
    $test++;
    }
for($j=0;$j<=$arg1;$j++){
    for($k=0;$k<=$arg2;$k++){
 if(@thing[$j] == @thing1[$k]){
     print "A common divisor of $arg1 and $arg2 is: ". @thing[$j] . "\n";
     } 
    
 }
    }