#include <ctime>
#include <cstdio>
#include <vector>

using namespace std;

#define forn(i, n) for (int i = 0; i < (int)(n); i++)

const int N = (int)1e7;

vector <int> v[N];

int main()
{
  forn(i, N)
  {
    //v[i].reserve(1);
    //v[i].push_back(i);
    
    //v[i].resize(1);
    //v[i][0] = i;

    v[i].push_back(i);
  }
  printf("time = %.2f\n", (double)clock() / CLOCKS_PER_SEC);
  return 0;
}