Task

• Given three integers a ,b ,c, return the largest number obtained after inserting the following operators and brackets: +, ``, ()
• In other words , try every combination of a,b,c with [+()] , and return the Maximum Obtained* (Read the notes for more detail about it)

Example

With the numbers are 1, 2 and 3 , here are some ways of placing signs and brackets:

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

So the maximum value that you can obtain is 9.

Notes

• The numbers are always positive.
• The numbers are in the range (1 ≤ a, b, c ≤ 10).
• You can use the same operation more than once.
• It's not necessary to place all the signs and brackets.
• Repetition in numbers may occur .
• You cannot swap the operands. For instance, in the given example you cannot get expression (1 + 3) * 2 = 8.

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