最大流，The programs are designed to run under BSD UNIX.
All programs read from the standard input and write to the standard
output. Run "make" to compile the programs and generators.
File "list" lists the programs produced my "make".
Input files are in DIMACS format. See sample.input.
％ A 2D homogeneous convection-diffusion case (u=exp(-ex*deta*x-ex*deta*y) with a square with
％ all Dirichlet boundary, note that reaction coefficient is not zero
％ by indirect BKM
A 2D homogeneous Helmholtz case (u=sin(x)cos(y) with a square) with
％ two Dirichlet edges (x=1,y=1) and two Neumann edges (x=0,y=0)
％ by indirect symmetric BKM
