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Python (Basic) Solutions: • Hackerrank. {"payload":{"allShortcutsEnabled":false,"fileTree":{"":{"items":[{"name":"README. You signed out in another tab or window. Dot and Cross – Hacker Rank Solution. must not be primes, so we mark them off as well. 4 of 6; Test your code You can compile your code and test it for errors and accuracy before submitting. Follow.