Ivan Pyankov@ant_hillRussiaFollowVerified SkillsCertificate: Problem Solving (Intermediate)VerifiedCertificate: Problem Solving (Basic)VerifiedCertificate: Problem Solving (Advanced)VerifiedCertificate: SQL (Basic)VerifiedCertificate: SQL (Intermediate)VerifiedCertificate: SQL (Advanced)VerifiedBadgesProblem SolvingJavaSqlRatingsSubmissionsUser has not solved any challenges yet.Contest HistoryUser has not participated in any contests yet.DiscussionsUser doesn't have any discussions yet.