#include <iostream>
#include <vector>
#include <set>

using namespace std;

template <typename T>
int count_elements(T container) {
  int count = 0;
  for(typename T::iterator vi = container.begin(); vi != container.end(); ++vi) {
    if(*vi > 10) {
      ++count;
    }
  }
  return count;
}

int main() {

  vector<double> v;

  v.push_back(10.0);
  v.push_back(20.0);

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

  cout << endl;

  v.push_back(30.0);

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

  cout << endl;

  v.pop_back();

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

  cout << count_elements(v) << endl;


  set<double> s;
  s.insert(4.5);
  s.insert(-4.5);
  s.insert(0.0);
  s.insert(40.0);
  s.insert(20.0);
  s.insert(40.0);

  cout << count_elements(s) << endl;
  
  map<string, int> m;

  m["Ciao"] = 4;
}