13.Parkrun is succeeding where London's Olympic " legacy" is failing. Ten years ago on Monday, it was announced that the Games of the 30th Olympiad would be in London.
14.The 400th anniversary of Shakespeare's death in 2016 and the preceding Cultural Olympiad supplementing the Olympic Games in London in 2012 also contributed to generating awareness of the global reach of Shakespeare's texts.
15.Other Olympiad problems involve some function to analyze, or a numerical pattern to deduce, or perhaps a difficult counting setup or an elaborate geometric construction, but problem 2 is an unusually pure puzzle.