Comments
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Thank you for your comments

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My G2 has been double checked. How can I appeal

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Excuse me, I'm all G2 checked, but I just changed the board. What should I do? Sorry, I'm only 2000 and can't add points

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Excuse me, I'm all G2 checked, but I just changed the board. What should I do? Sorry, I'm only 2000 and can't add points

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About me using an LCA standard board to change, I hope to re-examine, I have no need to write G2, G1 first, and I submitted the same code for both questions, G1 did not check G2 but checked again, which is incredible I only 2000 people, in order to write this problem spent a lot of time, in order to score can be written from front to back, I looked at the code and found that the so-called check is the same, in addition to the board is almost the rest of the basic difference This is unacceptable LCA board should be the same on the whole network Ah Administrators are expected to re-examine

On ArisCodeforces Round #780 (Div. 3), 4 years ago
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thank for your ideas

On ArisCodeforces Round #780 (Div. 3), 4 years ago
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I think D is a Directly Calculating..

On ArisCodeforces Round #780 (Div. 3), 4 years ago
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thank you & you are so strong