时间复杂度$O(mn)$

C++ 代码

class Solution {
public:
    vector<vector<int>> flipAndInvertImage(vector<vector<int>>& A) {
        for (auto& vec : A){
            reverse(vec.begin(), vec.end());
            for (auto& x : vec)
                x ^= 1;
        }
        return A;
    }
};