#include<stdcpp.h>
using namespace std;

class Solution{
    public:
    int firstCompleteIndex(vector<int>& arr, vector<vector<int>>& mat) {
        
    }
};

int main(){
    Solution sol;

    vector<int> ex1_arr = {1,3,4,2};
    vector<int> ex1_row1 = {1,4};
    vector<int> ex1_row2 = {2,3};
    vector<vector<int> > ex1_mat = {ex1_row1,ex1_row2};
    sol.firstCompleteIndex(ex1_arr, ex1_mat);

    vector<int> ex2_arr = {2,8,7,4,1,3,5,6,9};
    vector<int> ex2_row1 = {3,2,5};
    vector<int> ex2_row2 = {1,4,6};
    vector<int> ex2_row3 = {8,7,9};
    vector<vector<int> > ex2_mat = {ex2_row1,ex2_row2,ex2_row3};
    sol.firstCompleteIndex(ex2_arr, ex2_mat);
}