Ok, as it is not correct to get the test cases for it… My program works correctly for the given test cases but it says wrong solution for all the rest cases. Can somebody explain the question properly(with an example maybe)???
Sorry no help during the contest , work out yourself and get AC 
Try harder, Read the problem statement carefully and observe the test cases again and again you’ll understand the approach,
And for help it is against the codechef rules, you cannot ask for help regarding on-going contest problems…
Best of luck…
I think, the test cases mentioned in the problem are explained well enough… Didn’t you understand those? Try reading them again… All the best 