Xu Zhang@cshshshCanadaFollowAboutEducationUniversity of AlbertaVerified SkillsCertificate: Problem Solving (Basic)VerifiedBadgesProblem SolvingEducationUniversity of AlbertaRatingsSubmissionsUser has not solved any challenges yet.Contest HistoryUser has not participated in any contests yet.DiscussionsUser doesn't have any discussions yet.