ev=gets.chomp

maxi=nil
ev.size.times{|i|
    ev=ev[1..-1]+ev[0]
    next if ev[0].match(/\D/)
    begin	
        _ev=ev.gsub(/0(\d+)/,"\\1")
        c=eval(_ev)
        maxi=c if !maxi||maxi<c
    rescue SyntaxError => e
    end
}
p maxi