Create draft.py for testing codes, ideas

changing `for` loop to list comprehension makes things faster

Update .gitignore

speed up by dropping the search for position

solved stackoverflow

recursive sol of NY chaos

Merge pull request #5 from musketeer191/opt_abbr_sol

successfully found a faster sol

fixing cases related to the in-between part

sol gets better, but sth still missing

use dynamic programming

Update .gitignore

reorg script files

reorg test data

remove useless optimizing trial