#include <iostream>
using namespace std;

struct Rectangle {
    int a,b;
};

Rectangle getData(Rectangle);
int Peremeter(Rectangle);

int main()
{
    Rectangle rect;
    rect = getData(rect);
    cout<<"S= "<<Peremeter(rect)<<endl;
	system("pause");
	return 0;
}

Rectangle getData(Rectangle rect) {
    cout << "a=: ";
    cin>>rect.a;
    cout << "b=: ";
    cin>>rect.b;
    return rect;
}

int Peremeter(Rectangle rect)
{
  int S=rect.a*rect.b;
  return S;
}