import sys
import math


mi=-1<<60
S=raw_input().strip()

for i in range(11):
	S=S[1:]+S[0]
	if S[0]=='+':
		continue
	if S[0]=='-':
		continue
	if S[-1]=='+':
		continue
	if S[-1]=='-':
		continue
	mi=max(mi,eval(S))

print mi