S = input()
maxnum = -9999999999999999999999999
length = len(S)
ckecknum = lambda x: not (x == "+" or x == "-")
for i in range(length):
    line = S[i:length] + S[0:i]

    tline = line
    while tline[0] == "0":
        tline = tline[1:len(tline)]
    j = 1
    while j < len(tline):
        if (tline[j - 1] == "+" or tline[j - 1] == "-") and tline[j] == "0":
            if j == len(tline) - 1:
                break
            else:
                if tline[j+1].isdigit():
                    tline = tline[0:j] + tline[j+1:len(tline)]
        else:
            j += 1
    line = tline

    first = line[0]
    end = line[len(line) - 1]
    if not ckecknum(first) or not ckecknum(end):
        continue
    
    try:
        maxnum = max(maxnum, eval(line))
    except:
        pass
print(maxnum)