import re

S = input()

print(
    max(
        [
            eval(s)
            for s in [re.sub(r"0+(\d+)", r"\1", t) for t in [S[i:] + S[:i] for i in range(len(S))]]
            if not re.match(r"^[^+-].*[^+-]$", s) is None
        ]
    )
)