s = input()

eval_list = []

for i in range(len(s)):
	s = s[-1] + s[:-1]
	
	if s[0] not in ["+","-"] and s[-1] not in ["+","-"]:
		num_list = [str(int(v)) for v in s.split("+")]
		ope_list = []
		for j in range(len(s)):
			if s[j] in ["+","-"]:
				ope_list.append(s[j])

		s = ""
		for j in range(len(ope_list)):
			s += (num_list[j]+ope_list[j])
		s += num_list[-1]

		eval_list.append(eval(s))

print(max(eval_list))