import sys
from typing import List, Tuple


def int1(x: str, /): return int(x) - 1


def input(): return sys.stdin.readline().rstrip('\n')


def ev(x: str):
    if not (x[0].isdigit() and x[-1].isdigit()):
        return float('-inf')
    a = c = 0
    d = 1
    for i in x:
        if i.isdigit():
            c = 10 * c + int(i)
        else:
            a += d * c
            c = 0
            d = 1 if i == '+' else -1

    return a + d * c


def main():
    s = input()
    ans = float('-inf')
    for i in range(len(s)):
        ans = max(ans, ev(s[i:] + s[:i]))
    return ans


def _start():
    ret = main()

    if ret is not None:
        if isinstance(ret, List) or isinstance(ret, Tuple):
            print(*ret)
        else:
            print(ret)


if __name__ == '__main__':
    _start()