csp-s Analog 77

T1:
  Do not discuss the 27 kinds of silly points situation! ! !
  Bitwise consider, for each, a and b enumerate what is the position, there are several viable record, you can take up
 
T2:
  Analog to
 
T3:
  immortal question
  to consider inclusion and exclusion
    were recorded at each point and those blank block is connected to the communication, then the communication block status enumerated
    as: (1), (1,2), (2,3), (1,2,3), (1,2,3,4)
    finally calculated for each communication status block contains several points, to about inclusion and exclusion