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