// A6

#include <vector>
#include <list>
#include <iostream>

void main() {

  std::vector< std::list<int> > vi;
  std::list<int> li;
  vi.push_back(li);
  vi[0].push_back(1);
  vi[0].push_back(2);
  vi[0].push_back(3);

  std::list<int>::iterator it = vi[0].begin();
  for(it = vi[0].begin(); it != vi[0].end(); it++)
    std::cout << *it << " ";
  std::cout << "\n\n";
}