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Overall Editorial

• A-F in 3 minutes by evima

A - Past ABCs

• Official Editorial by en_translator

B - Dentist Aoki

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C - Sort

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D - New Friends

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E - Toward 0

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F - Transpose

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G - Mediator

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• Link Cut Tree Solution by Penguin07
• Small-to-large merging by abhishek_saini
• Bitset with brute force solution by hahasha