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

#Die Roller: uses 4d6 discarding the lowest number
#rerolling any roll of 1

my $roll = 6;
my @sums;

until ($roll == 0) {
    my @d6;
    chomp $roll;
    $roll--;
    $d6[0] = int(rand(6) + 1);
    $d6[1] = int(rand(6) + 1);
    $d6[2] = int(rand(6) + 1);
    $d6[3] = int(rand(6) + 1);
    @d6 = sort @d6;
    $d6[0] = int(rand(6) + 1); #reroll lowest number
    my $sum = $d6[0] + $d6[1] + $d6[2] + $d6[3];
    push(@sums, $sum);

    print "$d6[0], $d6[1], $d6[2], $d6[3] : $sum\n\n";
}

@sums = sort @sums;
my $three_highest = $sums[3] + $sums[4] + $sums[5]; #add three highest numbers in array
print "total of three highest roles : $three_highest";