#include <iostream>
using namespace std;
class shapes
{
protected:
	int N;
	long *SIDES;
public:	
	shapes(int x)
	{
		if (x==2) 	
			SIDES=new long[4];
		else
			SIDES=new long[x];
		N=x;
		cout<<"Please enter data for "<<N<<" sides"<<endl;
		for (int i=0;i<N;i++)
			cin>>SIDES[i];
		if (x==2)
		{
			SIDES[2]=SIDES[0];
			SIDES[3]=SIDES[1];
			N=4;
		}
	}
	shapes()
	{
	}
	long heikef()
	{
		long tmp=0;
		for (int i=0;i<N;i++)
				tmp+=SIDES[i];
		return tmp;
	}
};

class rectangle: public shapes 
{
public:
	rectangle()
	{
		shapes(2);
	}
	
};
class triangle: public shapes {
public:
	triangle()
	{
		shapes(3);
	}
};
void main()
{
	triangle tri;
	rectangle rec;
	cout << tri.heikef();
	cout << rec.heikef();
}