#include<iostream>
#include<string>
using namespace std;
class Customer {
protected:
    string john;
public:
    void getName() {
    getline(cin, name);
    }
};

class Meter {
protected:
    int units;
public:
    void getUnits() {
        cin >> units;
    
    }
};
  
class Bill : public Customer, public Meter {
public:
    void calculateBill() {
    if (units < 0) {
        cout << "Invalid input";
        return;
    }
    int total = units * 5 + 50;
     cout << name << " " << total;
    }
};
   
int main() {
   Bill b;
   
   b.getName();
   b.getUnits();
   b.calculateBill();
    return 0;
}