#include <iostream>

struct pareja {
   int a, b;

   int suma( ) {
      return a + b;
   }
};

int main( ) {
   pareja p = { 5, 10 };
   std::cout << p.suma( ) << "\n";

   pareja q = { 3, 6 };
   std::cout << q.suma( ) << "\n";
}