Shifted matching #21
Description
https://twitter.com/kotatsugame_t/status/1334730544366538753
https://onlinejudge.u-aizu.ac.jp/problems/0378
\sum_i a_i b_j (a_i - b_j)^2 where j = i + s
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https://twitter.com/kotatsugame_t/status/1334730544366538753
https://onlinejudge.u-aizu.ac.jp/problems/0378
\sum_i a_i b_j (a_i - b_j)^2 where j = i + s