code simulator

Question

Hi!
I solve tasks in the code trainer and when the code is validated, the input and output are validated in the first tests these tests have a description. And there are hidden tests that sometimes fail and show no errors.
How do you know what the error is if there is no error description in these tests?

Answer 1

Follow all instructions which is mentioned in problem . And make according to input format and what is expecting Output.

Answer 2

Ideally those test cases should also have been hidden.
All the required information about the input and output(with example) is already provided to you in the question and your program/algorithm should generate a correct answer for all the test cases till the time the input is correct.

Answer 3

Read the description carefully... Analyse the different possible test cases.. You should think like a tester...