#include <iostream>
#include <map>
#include <string>
#include <vector>

using namespace std ;

class Person
{
   public:
    int age ;
    Person( int ageP )
     {
        age = ageP ;
	 }
};


int main()
{
    vector<Person> v1 ;
    auto v2  = v1 ;
     v1.push_back( Person(22) ) ;
     v1.push_back( Person(23) ) ;

    for( vector<Person>::iterator iter1 = v1.begin() ;
         iter1 != v1.end() ; iter1++ )
        {
           cout << iter1->age << " " ;

		}
    cout << endl ;
    for( Person& person : v1 )
      {
          person.age =  person.age + 1 ;
	  }

    for( Person person : v1 )
      {
          cout << person.age << " " ;
	  }
	cout << endl ;

  return 0;
}