#include <iostream>
#include <string>
#include <vector>
#include <cctype>
#include <cstdlib>
#include <fstream>
#include <sstream>
#include <list>
#include <deque>


int main()
{
        std::list<int> nums = {1, 2, 3, 4, 5};
        auto &ref = nums;

        nums.assign({1, 2, 3, 4, 5, 6, 7});
        for (auto &i : nums)
                std::cout << i << std::endl;
}