import sys
from typing import List, Tuple


def int1(x: str, /): return int(x) - 1


def input(): return sys.stdin.readline().rstrip('\n')


def ev(x: str):
    assert x[0].isdigit() and x[-1].isdigit()
    return eval(x)


def main():
    s = input()
    ans = float('-inf')
    for i in range(len(s)):
        try:
            ans = max(ans, ev(s[i:] + s[:i]))
        except:
            pass
    return ans


def _start():
    ret = main()

    if ret is not None:
        if isinstance(ret, List) or isinstance(ret, Tuple):
            print(*ret)
        else:
            print(ret)


if __name__ == '__main__':
    _start()