4 3
1 2 30 40

For this input there is no solution!!
No way exists for 4 numbers to be placed into 3 columns, when 2 columns has equal length and 3rd has littler length!
(but this input doesn't permitted by the statement of the task o_O)

И что с этим делать? Я опять запутался >_<

Edited by author 20.10.2009 21:41

Read the statement more carefully.
It is guaranteed that solution is always exist.