def elmLead0(s):
    while True:
        if '+0' in s:
            s.replace('+0', '+')
        elif '-0' in s:
            s.replace('-0', '-')
        elif s[0] == '0':
            s = s[1:]
        else:
            break
    return s

s = input()
ans = -(10**9)
for i in range(len(s)):
    t = s[i:] + s[:i]
    if t[0] not in '+-' and t[-1] not in '+-':
        ans = max(ans, eval(elmLead0(t)))

print(ans)