rprogn, 203 bytes

Result

AC

Duration

500ms

Code [DL]

read read read read + + + "%d%d" ↔
O "l" = O "k" = O "j" =
O l - z = O k - y = O j - x =
O l - Z = O k - Y = O j - X =
O l - x Y * X y * - * \ O k - z X * Z x * - * \ O j - y Z * Y z * - * \ [ + + 6 //

stdin

99 23 08
24 34 59
81 46 82
30 91 07

stdout

56879

stderr

strace