[김윤승]

If your OS doesn't provide OCaml 4.01 version, then you can choose one of these options:

1. Just use the provided version.
If you don't use uncommon features or libraries of OCaml, there will be no problems. However, we are not sure until your homework is graded.

2. Install OPAM
OPAM is a package manager for OCaml. Follow this(http://opam.ocaml.org/doc/Install.html) to install it, and after that, type these lines at the terminal :