 ⠡ m*n   祩 뢠 1, 2  3.
㬬 ᥫ    2*2   k.
 ⢮ .

孨᪨ ᫮
 m,m,k (2<=m,n<=1000, 4<=k<=12)
뢮 ⢮    1000000007
ਬ

2 2 8
뢮
19

2 3 4
뢮
1
