#!/usr/bin/env python
# -*- coding: utf-8 -*-

S = input()
ans = -10**10
for i in range(len(S)):
    e = S[i+1:] + S[:i+1]
    if e[0] in  ['+','-'] or e[-1] in ['+','-']:
        continue
    print('before :',e)
    e = ''.join([str(int(s)) if s.isdigit() is True else s for s in ''.join([' ' + x + ' ' if x in ['+','-'] else x for x in e]).split()])
    print(e)

    ans = max(ans,eval(e))
print(ans)