// Copyleft: Sathiamoorthy Manoharan.

#include <iostream>

int
main()
{
   // Send to the output stream the string "enter two ..."
   std::cout << "enter two numbers: ";
   int a, b;
   // Receive from the input stream the integer values 'a' and 'b'
   std::cin >> a >> b;
   // Send to the output stream a string and the integer sum
   std::cout << "sum: " << (a+b) << "\n";

   return 0;
}