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 28th-31st of July, 2019 
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 Animated diagrams use Py2Web by Dmitri Turevski and WinChloe’s graphics.  | 
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All previously published problems you can find in the subsections of Original Problems menu on the top. The judge of JF-2019/II: Petko Petkov. The judge of Retro & PG problems 2019-2020: Vlaicu Crișan.

						    