TIMTOWTDI

#!/usr/bin/perl

use strict; # https://perlmonks.org/?node_id=11159342
use warnings;
use List::Util qw( sum );

local $_ = join '', <DATA>;
s/(?:\[ 0, \S+(,.*\n)){2,}/ my $last = $1;
  '[ 0, ' . (sum $& =~ m~, (\S+),~g) . $last/ge;
s/(?:\[ .*(, 0, .*\n)){2,}/ my $last = $1;
  '[ ' . (sum $& =~ m~\[ (\S+),~g) . $last/ge;
print;

__DATA__
[ -1, 5, 1 ],
[ 0, 5, 1 ],
[ 0, 5, 1 ],
[ 1, 5, 1 ],
[ 3, 4, 1 ],
[ 5, 1, 1 ],
[ 5, 0, 1 ],
[ 5, 0, 1 ],
[ 5, 0, 1 ],
[ 5, 0, 1 ],
[ 5, 0, 1 ],
[ 5, 0, 1 ],
[ 0, -5, 1 ],
[ 0, -5, 1 ],
[ 0, -5, 1 ],
[ 0, -5, 1 ],
[ 0, -5, 1 ],
[ 0, -5, 1 ],
[ 0, -5, 1 ],
[ 0, -5, 1 ],
[ 0, -5, 1 ],
[ -23, -64, 0 ],
[ -5, 0, 1 ],
[ -5, 1, 1 ],
[download]

which outputs:

[ -1, 5, 1 ],
[ 0, 10, 1 ],
[ 1, 5, 1 ],
[ 3, 4, 1 ],
[ 5, 1, 1 ],
[ 30, 0, 1 ],
[ 0, -45, 1 ],
[ -23, -64, 0 ],
[ -5, 0, 1 ],
[ -5, 1, 1 ],
[download]

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