import re

def calc(inp):
    numbers = re.split(r'[\+\-\*\/]', inp)
    symbols = re.split(r'\d', inp)
    numbers = map(int, numbers)
    symbols = [x for x in symbols if x != '']
    ans = numbers[0]
    for i in xrange(len(symbols)):
        if symbols[i] == '+':
            ans += numbers[i+1]
        elif symbols[i] == '-':
            ans -= numbers[i+1]
        elif symbols[i] == '*':
            ans *= numbers[i+1]
        elif symbols[i] == '/':
            ans /= numbers[i+1]
    return ans


String = raw_input()

ans = []
for i in xrange(len(String)+1):
    string = String[i:] + String[:i]
    if string[0].isdigit() and string[-1].isdigit():
        ans.append(calc(string))

print max(ans)