They cheated. The page says all code will be rerun with different input at the end of the week to determine the true winner, so all the hardcoded answers will d

They cheated. The page says all code will be rerun with different input at the end of the week to determine the true winner, so all the hardcoded answers will drop out at that point. Though it seems this problem has an obvious fastest solution that has been found and mimic'd repeatedly.