#include<iostream> #include<string>
using namespace std;
class customer{
    private:
    public:
    string n;
    void get()
    {
    getline(cin,n);
    }
};
class meter{
    private:
    public:
    int i,g;
    void geti(){
        cin>>g;
      
    }
};
class bill : public customer,public meter{
    private:
    public:
    void getb(){
        if(g<=0)
        {
            cout<<"Invalid input";
        }
        i=(g*5)+50;
        cout<<n<<i;
    }
};
int main(){
    bill obj;
     obj.get();
     obj.geti();
    obj.getb();
    return 0;
    
}