import re
def safe_eval(expression):
    # 演算子の前後にあるリーディングゼロを除去
    processed_expression = re.sub(r'(?<!\d)0+(\d+)', r'\1', expression)
    return eval(processed_expression)
S = input().strip()

NUM = [str(i) for i in range(10)]
ans = -10**10
for i in range(len(S)):
    x = S[i:]+S[:i]
    if x[0] not in NUM or x[-1] not in NUM:
        continue
    ans = max(ans,safe_eval(x))
print(ans)