1695.-maximum-erasure-value.md

1695. Maximum Erasure Value

class Solution:
    def maximumUniqueSubarray(self, nums: List[int]) -> int:
        
        ans = 0
        max_ = -float("inf")
        wins = collections.defaultdict(int)
        l = r = 0
        while r < len(nums):
            n1 = nums[r]
            wins[n1] += 1
            ans += n1
            r += 1
            while wins[n1] > 1:
                n2 = nums[l]
                wins[n2] -= 1
                ans -= n2
                l += 1
            max_ = max(ans,max_)
                
        return max_