S = gets.chomp
puts (0...S.size).map{|i| s = S.dup; s << s[0, i]; s[0, i] = ""; s}
                 .select{|s| s =~ /^\d/ && s =~ /\d$/}
                 .map{|s| s.gsub(/(?<!\d)0+1/, "1")}
                 .map{|s| eval(s)}
                 .max