n(n+1)(n+1/2)
/
3
Solution
on
off
1
2
Rotate
Tip 1
3
4
5
6
n
on
off
Tip 2
on
off
n(n+1)(n+1/2)
/
3
Solution
on
off
1
2
Rotate
Tip 1
3
4
5
6
n
on
off
Tip 2
on
off
