#include <iostream>
#include <vector>
#include <cmath>
using namespace std;
int main()
{
  vector<double> x;
  vector<double>:: iterator it;  // iterator 
  // push i^2 
  for(unsigned i=0;i<6;i++) x.push_back(pow(i,2));
  // use iterator for output
  for(it=x.begin() ; it!=x.end() ; ++it){
    cout<<*it<<' ' ;
  }
  cout<<endl;
  return 0;
}