Every problem page has two buttons:
- Compile and Run
- When you click this button, the code that you have submitted is tested against the sample input and sample output.
- This is meant for you to check whether your code is working correctly when it is evaluated against the sample test cases.
- When you click this button, your code is evaluated against internal test cases.
- These extensive test cases take your program through rigorous checks to ensure that the code passes all the relevant test cases.