Doubts

I've been grinding a lot of leetcode recently since my interviews are close. But recently I came across some problems which require the user to input test cases by themselves (competitive programming style problems where we have to use scanner class (in java) sample problem) and for some reason, I find these types of problems really tough as I haven't practiced them enough. After a lot of asking I found that these types of questions are not usually asked in a real interview and the interview is just like leetcode problems (one where we have function and we've to just code the solution, no test case/number of inputs, no scanner class). So my question was should I skip these types of questions and just focus on leetcoding and giving contests or should I solve them too just to stay safe (which will require some extra time which I obviously don't have as my interview is near).