input:

1 1 2 2 2 1 1 3 1 2 1 3 1 3 3 2 2 1 1 2 2 3 2 2
1 2 1 2 1 1 1 2 3 2 3 1 2 1 3 2 3 3 2 1 1 1 3 1
2 2 2 3 3 1 3 3 3 1 3 2 2 3 2 3 2 1 3 2 1 2 1 3
2 2 3 2 3 1 2 3 1 2 2 2 2 2 2 2 2 3 1 1 1 3 2 3
2 3 2 2 3 2 1 2 2 3 1 2 3 3 3 3 3 2 3 1 2 1 3 2
0

output:

ACCCAEECE
2
CDDDBBC
1
AHEHECEGF
3
DBDHH
2
FDEECFG
2

祝切题愉快！