I have been trying out this two-pointers question for a very long time. http://www.spoj.com/problems/KOIREP/ But I haven't been able to implement it. I referred to the following Topcoder thread : http://apps.topcoder.com/forums/;jsessionid=85746DDEA3A3E514D06E169F530987BD?module=Thread&threadID=760646&start=0&mc=5#1598832

But my main problem is that I haven't been able to implement it. Can anyone please help me with this 1 ?