#include<iostream>
using namespace std;

class hcn
{
private:
int cd;
int cr;
public:
hcn(){cd=1;cr=1;}
int tinhcv()
{ int cv=(cd+cr)*2;
return cv;
}
void phongtogd()
{

cd=cd*2;
cr=cr*2;

}
void setcanh(int dai,int rong)
{ if ((dai>0)&&(rong>0))
cd=dai;
cr=rong;
}
};
void main()
{ hcn h;
int cd=7;
int cr=5;
h.setcanh(7,5);
cout<<h.tinhcv;
h.phongtogd();
cout<<h.tinhcv;
}