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2020 China Collegiate Programming Contest - Mianyang Site J. Joy of Handcrafttime limit per test2 secondsmemory limit per test256 megabytesinputstanda 阅读全文
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https://codeforces.com/blog/entry/81565 转自codeforces 1392F - Omkar and Landslide TL;DR: We can show that in the resulting array, every pair of adjacen 阅读全文