Byung Soo Kwon@planon21Follow BadgesProblem SolvingCPPDays of Code CertificationsCertificate: Problem Solving (Basic)VerifiedskillWork Experienceplanon21 has not updated employment details yet.Educationplanon21 has not updated education details yet.Linksplanon21 has not updated links details yet. Skillsplanon21 has not updated skills details yet.