def is_valid_eq(eq):
    if eq.startswith('+'):
        return False
    if eq.startswith('-'):
        return False
    if eq.endswith('+'):
        return False
    if eq.endswith('-'):
        return False
    return True

def find_max(S):
    max_val = -float('inf')
    for i in range(len(S)):
        eq = S[i:] + S[:i]
        if not is_valid_eq(eq):
            continue
        try:
            val = eval(eq)            
        except:
            val = max_val
        max_val = max(val, max_val)
    return max_val

S = input()
print(find_max(S))