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
    if '+-' in eq:
        return False
    if '-+' in eq:
        return False
    if '++' in eq:
        return False
    if '--' in eq:
        return False
    return True

def remove_leading_zeros(eq):
    while eq.startswith('0'):
        eq = eq[1:]
    prev_length = len(eq) + 1
    while len(eq) < prev_length:
        prev_length = len(eq)
        eq = eq.replace('+0', '+')
        eq = eq.replace('-0', '-')
    prev_length = len(eq) + 1
    while len(eq) < prev_length:
        prev_length = len(eq)
        eq = eq.replace('++', '+')
        eq = eq.replace('+-', '-')
        eq = eq.replace('-+', '+')
        eq = eq.replace('--', '-')
    if eq.endswith('-'):
        eq = eq[:-1]
    if eq.endswith('+'):
        eq = eq[:-1]
    return eq
    

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
        eq = remove_leading_zeros(eq)
        if len(eq) == 0:
            continue
        try:
            val = eval(eq)            
        except:
            val = max_val
        max_val = max(val, max_val)
    return max_val

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