POW 2019-18 and POW 2019-20 are still open. For each question, anyone who first submits a correct solution will get the full credit.
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Notice on POW 2019-18 and 2019-20,
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POW 2019-18 and POW 2019-20 are still open. For each question, anyone who first submits a correct solution will get the full credit.