문제
풀이
abcde|pppqq_qrrrs|aaa#c
abcde|ooonn|tttss|bbbcc
abcde|#mmmn|uuuvv|eeddd
fggii_illlk|xwwwv|efffg
fghhh|jjjkk|xxyyy|hhhgg
_----+-----+-----+-----
fjjjk|uvwxy|aaaii_ijjjk
lllkk|uvwxy|bbbff|lllkk
mmmnn|uvwxy|cccgf|mnopq
ooppn|tttss|dd#gg|mnopq
#opqq_qrrrs|deeeh|mnopq
-----+-----+----_+-----
aaab#|tuvwx|mmmjh|aaaf#
cccbb|tuvwx|nnljh|bbbff
defgh|tuvwx|onlji|cccgh
defgh|rrsss|oolki|dddgh
defgh|rqqqp_ppkki|eeegh