I would like to get a program that calculates the average of grades for each student and the average of grades for each student by dynamically receiving the number of students and subjects from Python.

kor_score = [49,49,20,100,80] math_score = [43,59,85,30,90] eng_score = [49,79,48,60,100]

I want to get an average according to the number of students and subjects I receive when I have a score like this. You will first try to code using int(input())). The problem is that I don't know how to sleep the code that depends on the number of inputs. I'd really appreciate your help.