#include <iostream>
    using namespace std;
     int & polo(int *a, int i);
     int main() 
    {
    	int * a = new int[3];
    	a[0]=0;
    	a[1]=0;
    	a[2]=0;
    	cout <<a[0]<< a[1] <<a[2]<<"\n"<<endl;
    	int & c = polo(a, 1);
    	c = 5;
     	cout <<a[0] << a[1] <<a[2]<<"\n"<<endl;
    	return 0;
    }
    int & polo(int *a, int i)
    {
    	return a[i];
    }