for my $key (keys %hash){
  if( $hash{$key}[0] and $hash{$key}[1] ){  # both are present
    print $out "$key => ", join( ' , ', @{$hash{$key}}), "\n";
  } else {                                   # one is missing
    print $out1 "$key => ", join( ' , ', @{$hash{$key}}), "\n";
  }
}