grafted point list grafted surface divide

i'm trying to create a series of attractor points, about 56 of them. i graft the points that i set, and find the distance with the surface points. So the distance between 195 points and 56 points. So it results in 10920 different distances after i graft both the surface points and the reference points.

The question is how i find the minimum of each path, without having to explode each branch to find it. is there any way?