#include <iostream>
#include <vector>
// scalar fill
template <typename T>
void fill(std::vector<int> &a, const T &c) {
        std::cout << "f1" << std::endl;
	a.push_back(c);
}
// vector fill
template <typename T>
void fill(std::vector<int> &a, const std::vector<T> &c) {
  std::cout << "f2" << " "<<c.size()<<std::endl;
  a.insert(a.end(), c.begin(), c.end());

}

void print(std::vector <int> const &a) {
   std::cout << "The vector elements are : ";

   for(int i=0; i < a.size(); i++)
   std::cout << a.at(i) << ' ';
}

int main(int argc, char **argv)
                    
{
  int v1(1);
  std::vector<int> v2{1,2,3};
  std::vector<int> a{1,1,1};
  print(a);
  fill(a,v1);
  print(a);
  fill(a,v2);
  print(a);
}