def strip_lzero(s):
    if s[0] != "0":
        return s
    for i, c in enumerate(s):
        if c != 0:
            return s[i+1:]

S = input()

max_v = -1000000000000
for i in range(len(S)):
    s = S[i:] + S[:i]
    if s[0] == "+" or s[0] == "-" or s[len(S)-1] == "+" or s[len(S)-1] == "-":
        continue
    else:
        s = strip_lzero(s)
        v = eval(s)
        if max_v < v:
            max_v = v
print(max_v)