import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

S = read().rstrip().decode()

INF = 10 ** 18
answer = -INF
for _ in range(20):
    S = S[-1] + S[:-1]
    if S[0] in '+-':
        continue
    if S[-1] in '+-':
        continue
    x = eval(S)
    if answer < x:
        answer = x

print(answer)