Describe your bug
You should add "a is greater or equal to b " in 1st if block. I know this is a silly mistake, But I thought Why not solve this too! also in 3rd if block, there is no “;” after cout.
Link: CodeChef: Practical coding for everyone
Screenshot
Additional info
I’m new to the c++, Maybe I made a mistake, so please let me know If I am wrong. I really appreciate any help you can provide. 
This is my 1st day in CodeChef platform also this discourse forum(Account created many days ago but never used it ), so If I typed in any wrong category or anything, please forgive me.