Duy Cong@duycong_cnVietnamFollow BadgesProblem SolvingCPPPythonDays of CodeDays of JSSqlC languageRuby CertificationsCertificate: C++ (Basic)VerifiedskillCertificate: SQL (Basic)VerifiedskillWork Experienceduycong_cn has not updated employment details yet.Educationduycong_cn has not updated education details yet.