#include <iostream>     // cout

#include <algorithm>    // copy_backward

#include <vector>       // vector

using namespace std;

int main () {

    vector<int> myvector;

    // set some values:

    for (int i=; i<=; i++)

        myvector.push_back(i*);          // myvector: 10 20 30 40 50

    myvector.resize(myvector.size()+);  // allocate space for 3 more elements

    copy_backward ( myvector.begin()+, myvector.begin()+, myvector.end() );

    cout << "myvector contains:";

    for (vector<int>::iterator it=myvector.begin(); it!=myvector.end(); ++it)

        cout << ' ' << *it;

    cout << '\n';

    return ;

}