https://open.kattis.com/users/jacob-tan-en
*** important ***: rename module name to "Main" before submission
in src/ folder, at the command line:
cat ../reduction.txt | runghc -package --ghc-arg=parsec Reduction.hs"https://open.kattis.com/problems/" ++ lowercase_module_name(in src/)
e.g.
https://open.kattis.com/problems/reduction
reduction.txt
src/Reduction.hs