Yichen Lu@luyichenFollow BadgesProblem SolvingCPPPythonDays ofStatistics CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Advanced)VerifiedskillWork Experienceluyichen has not updated employment details yet.EducationUniversity of Pennsylvania Linksluyichen has not updated links details yet. Skillsluyichen has not updated skills details yet.