Hi Marek, That's a really nice solution (and ultrafast).
Unfortunately I realise I stated the problem imprecisely. You're only allowed to use each number once (otherwise there's a trivial solution for every problem, i.e. x/x + x/x + x/x + ... + x/x repeated y times for target y given any source number x). Trying your program on 234 from [100,9,7,6,3,1] gives you 9*9*3-9 using the 9 three times. Does your solution adjust to deal with this additional requirement? At first I thought it would be an easy fix, but maybe it's a little more complicated than I thought... Dan Goodman -- http://mail.python.org/mailman/listinfo/python-list
