Yasuyuki Kataoka@yk1002jpFollow BadgesProblem SolvingDays of CodeSql CertificationsCertificate: Problem Solving (Basic)VerifiedskillWork Experienceyk1002jp has not updated employment details yet.Educationyk1002jp has not updated education details yet.Linksyk1002jp has not updated links details yet. Skillsyk1002jp has not updated skills details yet.