There was this recent question-https://codeforces.com/contest/1097/problem/D It involved the intuition for multiplicative functions. How to determine the multiplicativity of the given function?
How to find if a function is multiplicative?
There was this recent question-https://codeforces.com/contest/1097/problem/D It involved the intuition for multiplicative functions. How to determine the multiplicativity of the given function?