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

int main () {
  vector<int> v(4);
  cout << "size    : " << v.size() << endl;
  cout << "capacity: " << v.capacity() << endl;

  try {
    v.at(3) = 600;
    cout << "v[3]:" << v.at(3) << endl;
    v.at(4) = 1;
    cout << "v[4]:" << v.at(4) << endl;
  } catch(std::out_of_range& ex) {
    cout << ex.what() << endl;
  }
}