#coding: utf-8

def main():
    s = list(input())
    o = ['+', '-', '*', '/']
    l = [eval(''.join(rotate(s, i))) for i in range(len(s)) if not s[i-1] in o and not s[i] in o]
    print(max(l))
    

def rotate(l, i):
    return l[i:] + l[:i]

if __name__ == '__main__':
    main()