ひろし @hirogenJapanFollowAboutCurrentRakutenEducationUniversity of AntarcticaMore about me凡そ戦いは、正を以て合い、奇を以て勝つ。 BadgesProblem Solving CertificationsCertificate: Problem Solving (Basic)VerifiedskillWork ExperienceRakutenEducationUniversity of Maryland University CollegeUniversity of Antarctica