#include<iostream>
using namespace std;
class customer{
    public:
    string name;
        
    };

class Meter{
    public:
    int unitsconsumed;
};
class Bill:public Customer,public Meter
{
    public:
    void calculateBill(){
        if(unitsconsumed<0){
            cout<<"invalid input";
        else
        cout<<name<<" "<<unitConsumed*5+50);
    }
};
int main(){
    Bill b;
    cin>>b.name>>b.unitsConsumed;
    b.calculateBill();
    
    return 0;
}