I am stuck on 8C .Can anyone suggest me how to solve this problem ..?

I receive the error message "Denial of judgement" while submitting a solution for 225C - Barcode eg. 3230662 3230224 3230215 3230209 .

Why did this error occur ..?? How can i avoid it ..?

Here Fcdkbear is talking about DP approach for 169-D-Little Girl and Maximum XOR , But i could not understand its DP state( D[P][FL1][FR1][FL2][FR2] ) . Can anybody explain it , please ?