print(['ITMO','SPbSU','SPbSU','ITMO','ITMO','SPbSU','ITMO','ITMO','ITMO','ITMO','ITMO','PetrSU, ITMO','SPbSU','SPbSU','ITMO','ITMO','ITMO','ITMO','SPbSU','ITMO','ITMO','ITMO','ITMO','SPbSU','ITMO'][int(input())-1995])