C# Concise Solution
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```\nclass Solution {\npublic:\n    long long largestSquareArea(vector<vector<int>>& a, vector<vector<int>>& b) {\n        int n = a.size();\n        int64_t ret = 0;\n        \n        for (int i = 0; i < n; ++i) {\n            for (int j = i + 1; j < n; ++j) {\n                pair<int, int> bl = { max(a[i][0], a[j][0]), max(a[i][1], a[j][1]) };  \n                pair<int, int> tr = { min(b[i][0], b[j][0]), min(b[i][1], b[j][1]) };\n                int64_t c = min(tr.first - bl.first, tr.second - bl.second); \n                if (c <= 0) continue;\n                ret = max(c * c, ret);\n            }\n        }\n        \n        return ret;\n    }\n};\n```
['C++']