Vanya is doing his maths homework. He has an expression of form <image>, where x1, x2, ..., xn are digits from 1 to 9, and sign <image> represents either a plus '+' or the multiplication sign '*'. Vanya needs to add one pair of brackets in this expression so that to maximize the value of the resulting expression.

Input

The first line contains expression s (1 ≤ |s| ≤ 5001, |s| is odd), its odd positions only contain digits from 1 to 9, and even positions only contain signs  +  and  * . 

The number of signs  *  doesn't exceed 15.

Output

In the first line print the maximum possible value of an expression.

Examples

Input

3+5*7+8*4


Output

303


Input

2+3*5


Output

25


Input

3*4*5


Output

60

Note

Note to the first sample test. 3 + 5 * (7 + 8) * 4 = 303.

Note to the second sample test. (2 + 3) * 5 = 25.

Note to the third sample test. (3 * 4) * 5 = 60 (also many other variants are valid, for instance, (3) * 4 * 5 = 60).
qw = input()
g = ['*']
s = [1]
for i in range(len(qw)):
    if i % 2 == 0:
        s.append(int(qw[i]))
    else:
        g.append(qw[i])
c = 0
g.append('*')
s.append(1)
for i in range(len(g)):
    if g[i] == '*':
        for j in range(i + 1, len(g)):
            if g[j] == '*':
                a = 0
                b = s[0]
                for k in range(i):
                    if g[k] == '*':
                        b *= s[k + 1]
                    else:
                        a += b
                        b = s[k + 1]
                v = a
                w = b
                a = 0
                b = s[i + 1]
                for k in range(i + 1, j):
                    if g[k] == '*':
                        b *= s[k + 1]
                    else:
                        a += b
                        b = s[k + 1]
                b = w * (a + b)
                a = v
                for k in range(j, len(g)):
                    if g[k] == '*':
                        b *= s[k + 1]
                    else:
                        a += b
                        b = s[k + 1]
                c = max(c, a + b)
print(c)