The Power Duo

Pick the two crystals whose powers MULTIPLY to the biggest blast. Careful — two negative crystals multiply into something very positive… 💥

You get the crystal powers (at least two, positives and negatives possible). Print the biggest product of any two different crystals.

Example:

Input: powers = [3, 5, 2, 4] Output: 20

Checking every pair, the biggest product is 5 × 4 = 20.