#include <iostream>
using namespace std;
void discount( double *a,double*b ){
if(*a==*b)
*b=*b/2;
}
int main(){
double p1, p2;
cout << "Original price:" << endl;
cin >> p1 >> p2;
discount( &p1 , &p2 );
cout << "Price after discount:" << endl;
cout << p1 << " " << p2 << endl;
return 0;
}
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