Run time error!

Revision en2, by start_code_end, 2021-05-09 12:15:08

Can someone explain why is this code, https://codeforces.com/problemset/submission/1/115772376, facing run time error? Is there any bug in the code?

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  Rev. Lang. By When Δ Comment
en2 English start_code_end 2021-05-09 12:15:08 28
en1 English start_code_end 2021-05-09 12:14:30 185 Initial revision (published)