data/advent15.txt

   1 Disc #1 has 5 positions; at time=0, it is at position 2.
   2 Disc #2 has 13 positions; at time=0, it is at position 7.
   3 Disc #3 has 17 positions; at time=0, it is at position 10.
   4 Disc #4 has 3 positions; at time=0, it is at position 2.
   5 Disc #5 has 19 positions; at time=0, it is at position 9.
   6 Disc #6 has 7 positions; at time=0, it is at position 0.