It was good that the problems and solutions were provided together.

I will study hard ^^

It would be best if there was an explanation in advance of which function to use to solve the problem and if there was a process to solve the problem. When doing a coding test, I hope that the lecture will be about the data structure and algorithm that the examiner wants, and that this is what to use for this problem.

Thank you!! It was a good warm-up before going into the coding test!

It was good that the code was provided for parts 1~100, but the additional part you uploaded was a little difficult to see while typing.