{"head":"a3482d4ead019b10fe1baa0ad83cc983169f3ebf","size":1,"push_id":45575707,"shas":[["a3482d4ead019b10fe1baa0ad83cc983169f3ebf","cc575e27c56b5b1249a57b638a15d7a30d1270a2@gmail.com","added soln to problem 20","Konrad Listwan-Ciesielski"]],"ref":"refs/heads/master"}