def adjacentElementsProduct(inputArray):
    length = len(inputArray) - 1 
    x = 0
    y = 1
    firstIndex = inputArray[x]
    secondIndex = inputArray[y]
    product = []
    while y <= length:
        product.append(firstIndex * secondIndex)
        x = x + 1
        y = y + 1
    return max(product)