csharp, 304 bytes

Result

WA

Duration

835ms

Code [DL]

using System;using System.Linq;class A{static void Main(){char[]c={' ','\n'};string s=Console.In.ReadToEnd();int[]a=s.Split(c).Take(12).Select(Int32.Parse).ToArray();for(int z=8;z-->0;){a[z]-=a[9+z%3];Console.Write((a[7]*(a[0]*a[5]-a[3]*a[2])+a[6]*(a[4]*a[2]-a[1]*a[5])+a[8]*(a[3]*a[1]-a[0]*a[4]))/6);}}}

stdin

41 79 10
03 45 84
15 27 09
60 40 50

stdout

-25274365861140216862845216502972214592

stderr

strace