#include <iostream>
#include <cstdlib>
#include <vector>
using namespace std;

int main()
{

    //int a[3];

    vector<int> a;

    a.push_back(1);
    a.push_back(2);
    a.push_back(3);

    cout << a[0] << ' ' << a[2] << endl;

    vector<unsigned> vu;
    int r = rand() % 40 + 10;
    for (int i = 0; i < r; i++)
    {
        vu.push_back(rand() % 100 + 1);
    }
    cout << vu.size() << endl;

    cout << vu[2] << endl;
    vu[2] = 1000000;
    cout << vu[2] << endl;

    for (int i = 0; i < vu.size(); i++)
    {
        cout << vu[i] << ' ';
    }
    cout << endl;


}