A, B, C serve the same two interchanges in Singapore. A, B and C
will split up after leaving each interchange, without a single
duplicating stop after each interchange. Eastbound, A's sequence of
turns is RRRLRLLRLLRLRLRLR,B's is LRLLRLLRLRL and C's is
LLLLLRLRRRLLRRLRRLLR. What are A, B, C?
A- 7 , B - 14, c- 196 right???
EDIT: U qns give up all the answers liao, there are only 3
services that fit this discription in sg