leetcode:832

class Solution {
public:
    vector<vector<int>> flipAndInvertImage(vector<vector<int>>& A) {
        vector<vector<int>> ans;
        for (auto i:A) {
            vector<int> line;
            for (auto j = i.rbegin(); j != i.rend(); ++j) {
                line.push_back(!(*j));
            }
            ans.push_back(line);
        }
        return ans;
    }
};