$_=("DCC-D","111=8","CA11
BB2=1
CC=(A-9)
21=8×1
A-5=5-1
DC9-A
DD8-A
6×5-6=1
CC1-1
7-6=C×2
B-8=C-C
71=(21)
B-5=(5-1)
C-9=C-C
B-8=C-C
BB11
DD-1-1
CA2=1
9/9DA
CCA-A
6-1=6-6")[$$%3];s/\w\K\B/+/g;s/\w/hex$&/ge;s/(.*)=/($1)×/g;print