import re
S = input()
D = set(map(str, range(10)))
ans = -float('inf')
for i in range(len(S)):
    A = S[i:] + S[:i]
    if not A[0] in D or not A[-1] in D:
        continue
    ans = max(ans, eval(re.sub(r'\b0+(?!\b)', '', A)))
print(ans)