C:\test>1147022.pl
{ A => [6, 16], B => [7, 14], C => [8, 19], D => [8, 17], E => [10, 20] }

[A D C] => cost:22 value:52
[A D E] => cost:24 value:53
[A C E] => cost:24 value:55
[A E C] => cost:24 value:55
[C A E] => cost:24 value:55
[C E A] => cost:24 value:55
[E A C] => cost:24 value:55
[E C A] => cost:24 value:55
Best: E C A => 55