Answer to your question:
No. Codechef currently doesn’t provide the inputs for which your code doesn’t give the expected
output. You are supposed to look for mistakes in your code and correct them.
My two cents:
Yes, It is easy to debug your code if you know where your code fails.
But, Isn’t it a good exercise for you to figure out a subtle bug in your code ?
You will learn how to reason critically about your code and how it would behave on various inputs.
I think its a critical skill in real world projects, and at least as important as the problem