title: Which is the fastest method of input in C++
body: <p>I am coding for various programming olympiads and am trying to improve time efficiency. I'm looking for the fastest way to get input, using the gcc compiler without any external library.</p>
  
  <p>I've previously used cin and cout, but found that scanf and printf are much faster. Is there an even faster way? I don't care of space complexity that much, I rather prefer better time.</p>