Sergey Grekov@sngrekovFollow BadgesProblem SolvingDays of Code CertificationsCertificate: Problem Solving (Basic)VerifiedskillWork Experiencesngrekov has not updated employment details yet.Educationsngrekov has not updated education details yet.LinksLinkedinbBkrpvVeKvUTzweVi6GhmYJiW3xQkAjsm7L1sNMUjws= Skillssngrekov has not updated skills details yet.