rprogn, 262 bytes

Result

WA

Duration

520ms

Code [DL]

read "%d+" ↔ pop "j" = pop "k" = pop "l" = [
read "%d+" ↔ pop "a" = pop "b" = pop "c" = [
read "%d+" ↔ pop "d" = pop "e" = pop "f" = [
read "%d+" ↔ pop "g" = pop "h" = pop "i" = [
a e i * * b f g * * c d h * * + + a h f * * b i d * * c g e * * + + - 6 //

stdin

58 55 98
03 23 10
10 11 71
08 67 12

stdout

-375

stderr

strace