SOLUTION UP299-RMM SPRING EDITION 2021 Posted on February 29, 2020 by ssmrmh Proposed by D.M.Batinetu-Giurgiu,Neculai Stanciu-Romania SOLUTION UP299 Solution 1 by Remus Florin Stanca-Romania,Solution 2 by Mokhtar Khassani-Mostaganem-Algerie