Viewing insights from Codeforces 1370D: Odd-Even Subsequence that are similar (thus shared) with only this insight from Codeforces 1811F: Is It Flower?: Be careful of printing anything BEFORE you read all the input. Be careful of moving on in a while loop if nothing has CHANGED. by mathmastersd
- Be careful of distinguishing the length of a subsequence being even from the length of the ORIGINAL sequence being even. by mathmastersd
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