Toan Dang@dangtoan_hustVietnamFollow BadgesProblem SolvingCPPJavaPythonDays of CodeDays of JSSql CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillWork Experiencedangtoan_hust has not updated employment details yet.Educationdangtoan_hust has not updated education details yet.