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sâmbătă, 13 noiembrie 2021

Mongolian SL 2000 Math Olympiad, https://www.facebook.com/photo?fbid=4456586367743139&set=gm.1744931542378025


 

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https://artofproblemsolving.com/community/c6h616123p3670325

 This is my synthetic proof to the subject problem: