I have noticed that the problem statement of https://www.codechef.com/problems/FLOORDIS is incorrect. Firstly, the problem reads “The cost of having one meter of wall isolated is I per month”, but I is not defined anywhere. It should be K, I think. Additionally, the links to the figures in the explanation are broken.
This does not ruin the task as it is still solvable. However, I hope that the statement will be fixed