#include <iostream>
using namespace std;

class Arun{
    public:
    int *a,*b;
    Arun(int a,int b){
        this->a = a;
        this->b = b;
    }
    int add(){
        return a+b;
    }
    int sub(){
        return a-b;
    }
    ~Arun(){
        this->a = a;
        this->b = b;
    }
};

int main() { 
   Arun obj(10,5);
   cout<<obj.add()<<endl;
   cout<<obj.sub()<<endl;
    
    return 0; 
}