数学的帰納法は帰納法じゃないから頭に「数学的」ってついてるんだろうが。女性的射精法みたいなもんや
Why is this step necessary? poofion.com might not be the server where you are registered, so we need to redirect you to your home server first. Don't have an account? You can sign up here
poofion.com