Formulate and solve the following problems using the data files which are provided.

Transportation problem

Assume the capacity for each facility is $5000.$ Also, in the capacity constraints instead of using equality sign use less or equality sign $)$

Uncapacitated Facility Location problem $($UFL$)$

Use the model where Sij is the number of transferred units.

P$-$Median problem where we want to open exactly $3$ facilities.