Write a program that reads three integers, a, b, and c.

You may combine them using addition, multiplication, and brackets.

Print the largest possible value.

The possible expressions are:

• a + b + c
• a * b * c
• (a + b) * c
• a * (b + c)
• a + b * c
• a * b + c

Input

The input contains three integers, a, b, and c, on one line.

Output

Output the largest possible value.

Sample Input

1 2 3

Sample Output

9