HHHữu Hải@hai_kynopeViet NamFollowVerified SkillsCertificate: Problem Solving (Basic)VerifiedCertificate: Rest API (Intermediate)VerifiedCertificate: JavaScript (Basic)VerifiedBadgesSqlRubyRatingsSubmissionsUser has not solved any challenges yet.Contest HistoryUser has not participated in any contests yet.DiscussionsUser doesn't have any discussions yet.