I need a help in Full factorial problem!

I have a data with 12 columns and each with 40 rows. I want the sum of all the combinations of all rows in first column with the other columns. Likewise all other columns also (a full factorial). I have done it.

But now what I want to do is, if I select one of the sum values or give in a gui text box, like 100, then it should give me the values that added up to make the sum 100.

How should I do this. Someone please help me.

Answer 1

[Walter Roberson]

Please research "knapsack problems". They are not easy to solve in polynomial time.