Cover Array With Restricted Operations by tails (quick)

#!perl -pla
my($r,$j,@d,@c);
$_=<>;
unshift@{$c[$_]},$j++for split;
$r<($d[$_+1]=$k=$d[$_]+1)&&($r=$k)for map@{$c[$_]},@F;
$_=100-$r;

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