The official editorial for E given here: https://codeforces.net/blog/entry/92739 has much less detail than the Chinese editorial ( https://www.cnblogs.com/invisible-eyes/p/15003033.html ). Can anyone graciously translate the Chinese editorial E solution into english? ↵
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(Or provide an English solution?). I could not find an understandable proof for E in the comments section of the editorial's blog post.↵
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Thanks in advance.
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(Or provide an English solution?). I could not find an understandable proof for E in the comments section of the editorial's blog post.↵
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Thanks in advance.
