RunTime Error

Revision en1, by kelvin_0179, 2020-03-26 13:47:10

https://mirror.codeforces.com/contest/1249/submission/74376059

i dont understand what is the error saying . I need help on this please!

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en1 English kelvin_0179 2020-03-26 13:47:10 144 Initial revision (published)