Please solve the programming task below using a self-contained code snippet in a markdown code block.

You are given a 0-indexed integer array nums representing the score of students in an exam. The teacher would like to form one non-empty group of students with maximal strength, where the strength of a group of students of indices i0, i1, i2, ... , ik is defined as nums[i0] * nums[i1] * nums[i2] * ... * nums[ik​].
Return the maximum strength of a group the teacher can create.
 
Please complete the following python code precisely:
```python
class Solution:
    def maxStrength(self, nums: List[int]) -> int:
```