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hackerrank.com XML 1 - Find the Score Problem Link : https://www.hackerrank.com/challenges/xml-1-find-the-score/problem Difficulty : Easy Tip Problem can be solved in two ways We iterate all of child node We can visit child node as recursive function We will follow this way As input is XML, there is only one root element. Need one loop to visit every child nodes, and get the number attributes of..