479_A. Expression
Petya studies in a school and he adores Maths. His class has been studying arithmetic expressions. On the last class the teacher wrote three positive integers a, b, c on the blackboard. The task was to insert signs of operations '+' and '*', and probably brackets between the numbers so that the value of the resulting expression is as large as possible. Let's consider an example: assume that the teacher wrote numbers 1, 2 and 3 on the blackboard. Here are some ways of placing signs and brackets:

  * 1+2*3=7 
  * 1*(2+3)=5 
  * 1*2*3=6 
  * (1+2)*3=9 



Note that you can insert operation signs only between a and b, and between b and c, that is, you cannot swap integers. For instance, in the given sample you cannot get expression (1+3)*2.

It's easy to see that the maximum value that you can obtain is 9.

Your task is: given a, b and c print the maximum value that you can get.

Input

The input contains three integers a, b and c, each on a single line (1 ≤ a, b, c ≤ 10).

Output

Print the maximum value of the expression that you can obtain.

Examples

Input

1
2
3


Output

9


Input

2
10
3


Output

60
```python
a1 = int(input())
a2 = int(input())
a3 = int(input())

listValue = [a1*a2*a3, a1*(a2+a3), a1*a2+a3, a1+a2*a3, (a1+a2)*a3, a1+a2+a3]
maxValue = listValue[0]
for x in listValue:
    if x > maxValue:
        maxValue = x
print(maxValue)

```