**gurobi**,
examples which
call gurobi(), which
is an mathematical programming package for optimization,
solving problems in linear programming, mixed integer programming,
and mixed integer quadratic programming.

cplex, examples which call cplex(), which is an IBM optimization package which defines and solves a variety of linear programming problems, as well as network flow problems, quadratic programming problems, and mixed integer programming problems.

lp, a dataset directory which contains datasets for linear programming, used for programs such as CPLEX, GUROBI and SCIP;

scip, examples which call scip(), which is a code which solves mixed integer programming and mixed integer nonlinear programming problems.

- coins.lp, defines the problem.
- coins.sh, calls gurobi to solve the LP problem.
- coins.txt, output from gurobi.
- coins.sol, the solution file.

- reid.lp, defines the problem.
- reid.sh, calls gurobi to solve the LP problem.
- reid.txt, output from gurobi.
- reid.sol, the solution file.

- trinity.lp, defines the problem.
- trinity.sh, calls gurobi to solve the LP problem.
- trinity.txt, output from gurobi.
- trinity.sol, the solution file.