#include<iostream>
using namespace std;
class customer{
    public:
    string name;
    void getcustomer( string n){
        name=n;
    }
};
class meter{
    public:
    int unitConsumed;
    void getMeter(int units){
        unitsConsumed=units;
    }
};
class Bill : public customer,public Meter{
    public:
    void calculateBill(){
        if(unit Consumed<0){
            cout<<"Invalid input";
        }else{
            int totalbill=(unitConsumed*5)+50;
            cout<<name<<" "<<totalBill;
        }
    }
};
int main(){
    string customerName;
    int units;
    cin>>customerName;
    cin>>units;
    Bill b;
    b.getcustomer(customerName);
    b.getMeter(units);
    b.calculateBill();
    return 0;
}
}