#include<iostream>
#include<iomanip>
using namespace std;
class Person{
    public:
    string eNAME(string name){
        return name;
        
    }
    int eSALARY(int salary){
        return salary;
    }
};
class Employee:public Person{
    public:
    string eNAME(string name){
        return salary;
    }
};
class Employee :public Person{
    public:
    void display(string n,int s){
        cout<<eNAME(n)<<endl;
        cout<<eSalary(s);
        
        
    }
};
int main(){
    string s;
    int salary;
    getline (cin,s);
    cin>>salary;
    if (salary<0){
        cout<<"Invalid input";
        return 0;
    }
}