#include <iostream>


int main()
{
std::vector<int> vec;
for(int i = 0; i < 20; [](std::vector<int>& vek, int num) { vek.push_back(num); }(vec, i), ++i);
for(auto it = vec.begin(); it != vec.end(); [](std::vector<int>::iterator i) { std::cout << *i << " " } (it), it++);

return 0;
}