class Solution {
public:
    bool Find(int target, vector<vector<int> > array) {
        bool flag = false;

        for(int i = 0;i<array.size();i++){	//array.size()是数组的行数
            for(int j = 0;j<array[i].size();j++){
                if(array[i][j] == target)
                    flag = true;
            }
        }
        return flag;
    }
};