Yoon HeeSeung@iyhs1858Republic of KoreaFollow BadgesProblem SolvingCPPDays of CodeDays ofStatistics CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: C++ (Basic)VerifiedskillCertificate: C++ (Intermediate)VerifiedskillWork Experienceiyhs1858 has not updated employment details yet.Educationiyhs1858 has not updated education details yet.