I can't enter any XIX Open Cup and before. It shows The virtual contest is in progress. You are not allowed to participate. Can anyone deal with it please? snarknews
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How to calculate the coefficient of $$$\prod\limits_{i=0}^{p-1}(x+i) \bmod p$$$ ($$$p$$$ is a prime)? Thank you for reply.
Can someone tell me why?thx
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