Introduction - If you have any usage issues, please Google them yourself
When the solution of an input size n, and N values considerable problems when, if the problem can be into k different sub set, get k different can be solved independently of the sub problems, which 1<k is less than or equal to N, and sub problems and the original problem is of the same nature, the original problem solution by these subproblems merge solution obtained. Then, is a very effective method for this kind of problem.