// editor3
#include<iostream>
#include<string>
#include<iomanipo>
using namespace std;
class student
{
    public:
    string name;
    float grade;
    void data()
    {
        cin>>name;
        cin>>grade;
    }
};
class student1:public student
{
    public:
    void data1()
    {
        if(grade<0)
        {
            cout<<"Invalid input";
            return;
        }
        cout<<fixed<<"Name: "<<name<<", "<<"Grade:"<<grade<<setprecision(1);
    }
};
int main()
{
  student1 A;
  A.data();
  A.data1();
}