Simple Hashmap Soln
Intuition\n Describe your first thoughts on how to solve this problem. \n\n# Approach\n Describe your approach to solving the problem. \n\n# Complexity\n- Time 
# Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\n\n# Approach\n<!-- Describe your approach to solving the problem. -->\n\n# Complexity\n- Time complexity:\n<!-- Add your time complexity here, e.g. $$O(n)$$ -->\n\n- Space complexity:\n<!-- Add your space complexity here, e.g. $$O(n)$$ -->\n\n# Code\n```python3 []\nclass Solution:\n    def getLargestOutlier(self, a: List[int]) -> int:\n        d=Counter(a)\n        s=sum(a)\n        ans=-float("inf")\n        for i in a:\n            t=(s-i)//2 \n            d[i]-=1\n            # print(t)\n            if(d[t]>0 and (s-i)%2==0):\n                # print(t)\n                # print(d)\n                ans=max(ans,i)\n            d[i]+=1\n        return ans\n        \n        \n```
['Python3']