'''Multiply Maximazer

Get 4 numbers as an input. Split into two double digits number that generates the maximum number
when they are multiplied by each other
'''

def Multiply_Max(numbers):
    '''Sort the list reverse. Use indexing and make two double digits numbers a,b.
    The biggest number and the smallest number should be accompanied wheareas, middle 2 numbers should also be accompanied
    In order to calculate a*b, both a, b should be integers. change all the indexed to int.
    '''

    numbers.sort(reverse=True)

    a = int(numbers[0])*10 + int(numbers[3])
    b = int(numbers[1])*10 + int(numbers[2])

    return (a*b)

#num is a list of input
num = list(input("Please enter 4 digits of number:"))
print("Maximum number is:", Multiply_Max(num))