Kostya Belezko@bkostyaFollow BadgesProblem SolvingDays ofStatistics CertificationsCertificate: Problem Solving (Basic)VerifiedskillWork Experiencebkostya has not updated employment details yet.Educationbkostya has not updated education details yet.Linksbkostya has not updated links details yet. Skillsbkostya has not updated skills details yet.