"(one|puton|out|output|in|input)+"
it has simple solve using regexp, but i got ML 1. How to read correctly?

Edited by author 18.09.2013 18:24

Read only char-by-char (token-by-token). In the worst case you will have one string of 10^7 chars - this will get ML anyway (and with java it will occur much earlier). So, don't cheat, write parser honestly.