dwm042's answer below does this but there's a shortcut specifically for this kind of thing. Try this:
my $line = " 0 10 9 4 1 0 0 0 2 2 1 1 0";
my @config = grep /\S/, split / /, $line;
# or even
my @config = grep /\A\d+\z/, split / /, $line;
print join(", ", @config), "\n";
The second will only pass through numbers (well, positive integers and zero) so something like "6a" will be skipped.
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