std::list whose elements are std::deque that are integer

dat_struct.cpp

#include <iostream>
#include <list>
#include <deque>

int main ()
{
    std::list <std::deque <int> > list_deq;
    std::deque <int> temp_deq, temp_deq2;
    int temp_int = 0;

    while (std::cin >> temp_int) {
        temp_deq.push_front (temp_int);
           std::cin >> temp_int;
           temp_deq2.push_back (temp_int);
    }

    list_deq.push_front (temp_deq);
    list_deq.push_front (temp_deq2);

    for (auto ld : list_deq) {
        for (auto d : ld) {
            std::cout << d << " ";
        }
        std::cout << " , ";
    }

    return 0;
}