@liuwj23FranceFollowAboutEducationEcole Polytechnique BadgesProblem SolvingDays of CodeDays ofStatistics CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillCertificate: Problem Solving (Advanced)VerifiedskillWork Experienceliuwj23 has not updated employment details yet.EducationEcole Polytechnique