2441. Largest Positive Integer That Exists With Its Negative

class Solution:
    def findMaxK(self, nums: List[int]) -> int: 
        nums.sort()
        over = False
        for e in nums:
            for e2 in nums[::-1]:                
                if e > 0:
                    over = True
                    break

                if abs(e) == e2:
                    return e2

            if over:
                break
        return -1