#!/usr/bin/perl
use warnings;
use strict;

use PDL;

sub load {
    my ($filename) = @_;
    open my $FH, '<', $filename or die $!;
    return pdl(map [split], <$FH>)

}

my $matrix = cat(map load($_), @ARGV);
print average($matrix->reorder(2,0,1));



##</code><code>##

#!/usr/bin/perl
use warnings;
use strict;
use feature qw{ say };

use PDL;


sub load {
    my ($filename) = @_;
    open my $FH, '<', $filename or die $!;
    return pdl(join "\n", map { chomp; "[$_]" } <$FH>)
}


my @matrices = map load($_), @ARGV;
my $result = $matrices[0];
$result += $_ for @matrices[ 1 .. $#matrices ];
$result /= @ARGV;
say $result;


##</code><code>##

($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord
}map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,