I found out that China NOI problems are very interesting and hard, of course. I dont find any editorial for these problems on the internet so can anybody provide me some editorial ? ↵
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A chinese editorial could be helpful too (I hope google translate is enough) .↵
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Most of problems can be foundon wcipeg[here](https://wcipeg.com/problems/cat%3Dnoi%2Cshow%3D50)
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A chinese editorial could be helpful too (I hope google translate is enough)
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Most of problems can be found
