n=10: 1907 reachable points of length <= 60, 568 classes of parallel directions
  class of alpha=0.591478: floating billiard finds 2 of the 2 (length, factor) pairs of the unfolding, none else
  class of alpha=1.188892: floating billiard finds 2 of the 2 (length, factor) pairs of the unfolding, none else
  class of alpha=0.552370: floating billiard finds 2 of the 2 (length, factor) pairs of the unfolding, none else
  class of alpha=0.484967: floating billiard finds 2 of the 2 (length, factor) pairs of the unfolding, none else
  class of alpha=0.411695: floating billiard finds 2 of the 2 (length, factor) pairs of the unfolding, none else
  class of alpha=2.258276: floating billiard finds 2 of the 2 (length, factor) pairs of the unfolding, none else
  class of alpha=0.266111: floating billiard finds 2 of the 2 (length, factor) pairs of the unfolding, none else
  class of alpha=0.347425: floating billiard finds 2 of the 2 (length, factor) pairs of the unfolding, none else
bands computed: 9072 (rays from O, both sides); largest number of segments of a simple preclosed piece: 148
even n: every factor divides n/2; classes by (class name of Sect. 1 of the source, factors in the order of increasing preclosed length, ratios of the preclosed lengths):
  even  factors (1, 1, 1)    ratios (1.0, 2.61803, 3.23607)      classes: 17
  even  factors (5, 5, 1)    ratios (1.0, 2.61803, 3.23607)      classes: 106
  odd   factors (1, 1)       ratios (1.0, 1.61803)               classes: 72
  odd   factors (5, 5)       ratios (1.0, 1.61803)               classes: 373
DONE n=10 [6.3s]
