If you have written a program in a functional language (or Python, or Java) and received TLE, if you are convinced an equivalent program in C would have been accepted, please inform us about it in this thread. We will try to adjust timelimits or create a seperate version of the problem dedicated to functional programming.
Please edit the very first post of this forum then. I wrote a Haskell program which received TLE. I am convinced I wrote the equivalent program in C which was accepted.
-ljr