aoc/2016/input/15

Disc #1 has 17 positions; at time=0, it is at position 15.
Disc #2 has 3 positions; at time=0, it is at position 2.
Disc #3 has 19 positions; at time=0, it is at position 4.
Disc #4 has 13 positions; at time=0, it is at position 2.
Disc #5 has 7 positions; at time=0, it is at position 2.
Disc #6 has 5 positions; at time=0, it is at position 0.