Reading input Number of stops = 17 000000000011111111112222222222333333333344444444445555555555 012345678901234567890123456789012345678901234567890123456789 1 1 1 2 1 1 11 1 1 2 1 111 total = 17 Finding candidate bus routes 000000000011111111112222222222333333333344444444445555555555 012345678901234567890123456789012345678901234567890123456789 1 1 1 1 1 [ 0,13, 5] 1 1 1 [ 0,26, 3] 1 1 [ 0,37, 2] 1 1 [ 0,39, 2] 1 1 [ 0,45, 2] 1 1 [ 0,51, 2] 1 1 [ 0,52, 2] 1 1 [ 0,53, 2] 1 1 1 1 1 [ 3,12, 5] 1 1 1 [ 3,24, 3] 1 1 [ 3,34, 2] 1 1 [ 3,36, 2] 1 1 [ 3,42, 2] 1 1 [ 3,48, 2] 1 1 [ 3,49, 2] 1 1 [ 3,50, 2] 1 1 1 1 1 1 1 [ 5, 8, 7] 1 1 1 1 [ 5,16, 4] 1 1 1 [ 5,24, 3] 1 1 [ 5,32, 2] 1 1 [ 5,34, 2] 1 1 [ 5,40, 2] 1 1 [ 5,46, 2] 1 1 [ 5,47, 2] 1 1 [ 5,48, 2] 1 1 1 [13,16, 3] 1 1 [13,24, 2] 1 1 [13,26, 2] 1 1 [13,32, 2] 1 1 [13,38, 2] 1 1 [13,39, 2] 1 1 [13,40, 2] 1 1 [15,24, 2] 1 1 [15,30, 2] 1 1 [15,36, 2] 1 1 [15,37, 2] 1 1 [15,38, 2] 1 1 [21,24, 2] 1 1 [21,30, 2] 1 1 [21,31, 2] 1 1 [21,32, 2] 1 1 [26,27, 2] Number of candidate bus routes = 42