#include <iostream>
#include <map>

using namespace std;

int main() {
  int i=5;
  char j='a';
  pair<int&,char&> ij( i, j);

  cout << "i = " << i << endl;
  cout << "j = " << j << endl;  
  cout << "ij.first= " << ij.first << endl;
  cout << "ij.second= " << ij.second << endl;

  i = 10;
  j = 'c';
  cout << "i = " << i << endl;
  cout << "j = " << j << endl;  
  cout << "ij.first= " << ij.first << endl;
  cout << "ij.second= " << ij.second << endl;


  return 0;
}