unsigned int target_function(unsigned int n)
{
  unsigned int mod = n % 4;
  unsigned int result = 0;

  if (mod == 0) result = (n | 0xBAAAD0BF) * (2 ^ n);

  else if (mod == 1) result = (n & 0xBAAAD0BF) * (3 + n);

  else if (mod == 2) result = (n ^ 0xBAAAD0BF) * (4 | n);

  else result = (n + 0xBAAAD0BF) * (5 & n);

  return result;
}