Geek Sundaram and his Paranoia

Problem description Geek Sundaram has no time for washing clothes as he is too caught up in being geeky. He also jogs every morning to keep in shape, much to the delight of his fans. In order to maintain a good physique, while at the same time, avoid washing clothes Geek has a huge collection of socks. His collection consists of N socks. Each sock has a positive number sewn on it. It is well-kno