The minimum flow of S->T is the maximum flow of T->S
Maximize the flow of an edge (assuming x -> y): delete this edge and run the maximum flow with y as S x as T
Maximize the flow of a point: split this point into S and T to run the maximum flow
The minimum flow of S->T is the maximum flow of T->S
Maximize the flow of an edge (assuming x -> y): delete this edge and run the maximum flow with y as S x as T
Maximize the flow of a point: split this point into S and T to run the maximum flow