10 FOR X=0 TO 2:FOR Y=0 TO 2
20 READ A,O
30 IF A<>(X AND Y) THEN STOP 
40 IF O<>(X OR Y) THEN STOP 
50 NEXT Y:NEXT X
60 DATA 0,0,0,1,0,1
70 DATA 0,1,1,1,1,1
80 DATA 0,1,1,1,1,1
90 FOR X=0 TO 2
100 READ N
110 IF N<>( NOT X) THEN STOP 
120 NEXT X
130 DATA 1,0,0
200 PRINT "PASS":END 
