S=input()
N=len(S)

X=-float("inf")
for _ in range(N):
    F=1
    for i in range(N-1):
        if S[i:i+2] in {"++","+-","-+","--"}:
            S=S[1:]+S[0]
            continue
    if {S[0],S[-1]} & {"+","-"}:
        S=S[1:]+S[0]
        continue

    T=S
    while True:
        U=T
        T=T.replace("+0","+")
        T=T.replace("-0","-")
        if U==T:
            break

    if T[-1]=="+" or T[-1]=="-":
        T+="0"

    while T[0]=="0":
        T=T[1:]

    X=max(X,eval(T))
    S=S[1:]+S[0]
print(X)