Hi - a beginner here who is trying to coach his 8th grader for CP. I wanted to know the difficulty level of ZCO as compared to Codeforces Div2 A/B/C/D/E level. I understand the ZCO difficulty level could be changing from year to year. I just wanted to get a ballpark estimate so that I know where my son needs to be by December 2019. (he just finished all the Div 2A problems listed on "junior training sheet" by one Dr. Mostafa). Hope to get a response from more experienced people here.
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