#include<iostream>
using namespace std;
class Customer
{
    public:
     string name;
    public:
     void getName()
     {
         cin>>name;
     }
};
class Meter
{
    public:
     int usage;
    public:
     void getUsage()
     {
         cin>>usage;
     }
};
class Bill:public Customer, public Meter
{
    public:
     int totalbill;
    public:
     void getBill()
     {
         cout<<usage*5+50;
     }
};
int main
{
    Bill obj1;
    obj1.getName();
    obj1.getUsage();
    cout<<obj1.name<<" "<<ob1.getBill();
    return 0;
}