Elena Sergeeva@e_linkinFollow BadgesProblem SolvingCPP CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillWork Experiencee_linkin has not updated employment details yet.Educatione_linkin has not updated education details yet.Linkse_linkin has not updated links details yet. Skillse_linkin has not updated skills details yet.