Sergey Pustovoy@serj_pusFollow BadgesProblem SolvingJavaPythonDays of CodeSql CertificationsCertificate: Problem Solving (Basic)VerifiedskillWork Experienceserj_pus has not updated employment details yet.Educationserj_pus has not updated education details yet.Linksserj_pus has not updated links details yet. Skillsserj_pus has not updated skills details yet.