int main()
{
  int m = pow(2, 2);
  int n = pow(2, 8);
  cout << m << endl;
  cout << n << endl;
  
  double s1 = sin(5.0, 3.0);
  double s2 = sin(3.4, 2.7);
  cout << s1 << endl;
  cout << s2 << endl;
  
  return 0;
}