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DefaultDict TutorialProblem link : https://www.hackerrank.com/challenges/defaultdict-tutorial/problem Difficulty : EasyTipProblem suggest to use defaultdict(), however, it seems that just using list is better wayOne loop for list m, as per each m, to find index of m from list nthis way is better to know index from list nSolution a = list(map(int, input().split())) n = a[0] m = a[1] ns = [] ms = ..