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has_a_cycle ... Returns a cycle if the graph has one (as a list of vertices), an e +mpty list if no cycle can be found. Note that this just returns the vertices of a cycle: not any parti +cular cycle, just the first one it finds. A repeated call might find +the same cycle, or it might find a different one, and you cannot call + this repeatedly to find all the cycles.
Ada Lovelace for the palindrome Albert Einstein for having smelly feet Alfred Nobel for his contribution to battlefield science Burkhard Heim for providing the missing link between science and mysticism Claude Shannnon for riding a unicycle at night at MIT Donald Knuth for being such a great organist Edward Teller for being the template for Dr. Strangelove Edwin Hubble for pretending to be a pipe-smoking English gentleman Erwin Schrödinger for cruelty to cats Hedy Lamarr for weaponizing pianos Hugh Everett for immortality, especially for cats Isaac Newton for his occult studies Kikunae Ikeda for discovering the secrets of soy sauce Larry Wall for his website Louis Camille Maillard for discovering why steaks taste good Marie Curie for the shiny stuff Nikola Tesla for the cool cars Paul Dirac for speaking one word per hour when socializing Richard Feynman for his bongo skills Robert Oppenheimer for his in-depth knowledge of the Bhagavad Gita Rusi P Taleyarkhan for Cold Fusion Sigmund Freud for his Ménage ā trois Theodor W Adorno for his contribution to the reception of jazz Wilhelm Röntgen for the foundations of body scanners Yulii Borisovich Khariton for the Tsar Bomba Other (please explain why)
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