S=input()
an=-10**18
for i in range(len(S)):
    T=S    
    
    if T[0].isdigit() and T[-1].isdigit():
        for i in range(len(S)):
            T=T.replace('+0','+')
            T=T.replace('-0','-')
        while T[0]=='0':
            T=T[1::]
        if not T[0].isdigit():
            T='0'+T
        if not T[-1].isdigit():
            T=T+'0'
        an=max(an,eval(T))
    S=S[1::]+S[0]

print(an)