plz help me in solving this question ...
http://www.codechef.com/JUNE14/problems/MAXPR
i need clarification .... !!
for example if the series is 1 2 3
then the AP sequences are
1 2 3
1 2
2 3
1 3
1
2
3
so total 7..
so non AP sequences are zero
am i correct?
and anyone plz explain me how to solve this using dp in simple manner.. i am not understanding the editorial properly ..
