// C++ code to demonstrate 2D Vector
// with different no. of columns
#include<iostream>
#include<vector> // for 2D vector
using namespace std;
int main()
{
// Initializing 2D vector "vect" with
// values
vector< vector<int> > vect{{1, 2},
{3, 4, 5},
{6}};
// Displaying the 2D vector
for (int i=0; i<vect.size(); i++)
{
//loop till the size of particular
//row
for (int j=0; j<vect[i].size() ;j++)
cout << vect[i][j] << " ";
cout << endl;
}
return 0;
}