What is 'nan'?and why it's showing in my submission?

Revision en1, by Night_Lord, 2020-12-02 13:23:32

Today I have faced a weird type of wrong submission.Is that because of the power value is huge?or am I missing some things?

Problem:Little Pony and Expected Maximum

Tags #help error

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en1 English Night_Lord 2020-12-02 13:23:32 329 Initial revision (published)