#!/usr/bin/perl
use strict;
use warnings;
my @stack = split //, '9332682811';
while () {
@stack[-1, -2] = @stack[-2, -1];
$stack[-1] -= 9;
@stack[-1, -2] = @stack[-2, -1];
$stack[-1] *= 9;
{
$stack[-1] += $x;
}
}
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