#include <iostream>
#include <cstdlib>
#include <vector>
using std::cout; using std::endl;
using std::vector;
const int MAX = 10;

void print(const vector<int>& a) {
  cout << "Elements:" << endl;
  vector<int>::const_iterator ptr = a.begin();
  for (unsigned int i = 0; i < a.size(); ++i) {
    cout << a[i] << endl;
  }
}

int main() {
  vector<int> a;
  a.reserve(MAX);
  for (unsigned int i = 0; i < MAX; ++i) {
    a.push_back(rand() % 100);
  }
  print(a);
  vector<int>::iterator ptr = a.begin();
  while (ptr != a.end()) {
    if ((*ptr) % 2 == 0) {
      ptr = a.erase(ptr);
    }
    else ++ptr;
  }
  print(a);
  cout << a.size() << endl;
  return 0;
}