Explain the solution please!!

Правка en1, от The_SSU, 2021-01-23 20:24:20

https://mirror.codeforces.com/problemset/problem/1175/C can anyone explain the solution of this problem please? why should we check for the range of consecutive k elements here? solution is here 55178770

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en1 Английский The_SSU 2021-01-23 20:24:20 241 Initial revision (published)