how to create 2d array using vector in c 2b 2b

1// Create a vector containing n 
2//vectors of size m, all u=initialized with 0
3vector<vector<int> > vec( n , vector<int> (m, 0));  

1vector<vector<int>> vec(N, vector<int> (M, INT_MAX));
2
3Explanation::
4vector<vector<int>> -- will take the formed container
5N -- Think like row of 2d Matrix
6vector<int> (M, INT_MAX) -- In each row, there is again a vector associated with it, 
7that will formed 2d array.

12D vector