wrong answer

Revision en1, by improvement_19, 2020-06-07 16:44:42

https://codeforces.com/contest/820/submission/82782140 i didnot get what is the error in logic what does they mean by better answer?please help thanks in advance

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en1 English improvement_19 2020-06-07 16:44:42 174 Initial revision (published)