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use strict;
use warnings;

my $globalvar='';

sub in
{
$globalvar='Hallo';
}

soub out
{
print $globalvar;
}

in();
out();

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sub in
{
my $skalar=hallo;
my @array=(1,2,3);
my %hash=(a=>2,b=>3);
return (\$skalar,\@array,\%hash);
}

sub out
{
print $$_[0];
print "$_\n" for @$_[1];
print "$_=>$_[2]->{$_}\n" for keys %$_[2]:
}

my @refs=in();
out(@refs);

sub z{if(@_){1while$x[$k=rand 10];t($t=$x[$k]=1)}print map"$z[$x[$_]]$_".($_%3?
"":"\n"),1..9}sub t{$j=0;$x[$_+1]==$t&&($j+=2**$_)for 0..8;z,die"Gewinner $z[$t]
"if grep$_==($j&$_),7,56,73,84,146,273,292,448;z,die"Gleichstand\n"if@x>9&&!grep
!$_,@x}@x=4;@z=qw{. [ (};z$^T&1;while(<>){next if$_>9||$x[$_];t$t=$x[$_]=2;z 1}