c-gcc, 159 bytes

Result

AC

Duration

508ms

Code [DL]

z=12;a[12];s,p;main(q){for(;z--;)scanf("%d",a+z);for(z=9;z--;)a[z]-=a[9+z%3];for(z=3;z--;)s+=a[z]*=a[p=3+-~z%3]*a[q=6+(z+2)%3]-a[q-3]*a[p+3];printf("%d",s/6);}

stdin

44 95 42
67 11 14
12 44 05
99 71 20

stdout

22569

stderr

/tmp/code.c:1:1: warning: data definition has no type or storage class
 z=12;a[12];s,p;main(q){for(;z--;)scanf("%d",a+z);for(z=9;z--;)a[z]-=a[9+z%3];for(z=3;z--;)s+=a[z]*=a[p=3+-~z%3]*a[q=6+(z+2)%3]-a[q-3]*a[p+3];printf("%d",s/6);}
 ^
/tmp/code.c:1:1: warning: type defaults to 'int' in declaration of 'z' [-Wimplicit-int]
/tmp/code.c:1:6: warning: data definition has no type or storage class
 z=12;a[12];s,p;main(q){for(;z--;)scanf("%d",a+z);for(z=9;z--;)a[z]-=a[9+z%3];for(z=3;z--;)s+=a[z]*=a[p=3+-~z%3]*a[q=6+(z+2)%3]-a[q-3]*a[p+3];printf("%d",s/6);}
      ^
/tmp/code.c:1:6: warning: type defaults to 'int' in declaration of 'a' [-Wimplicit-int]
/tmp/code.c:1:12: warning: data definition has no type or storage class
 z=12;a[12];s,p;main(q){for(;z--;)scanf("%d",a+z);for(z=9;z--;)a[z]-=a[9+z%3];for(z=3;z--;)s+=a[z]*=a[p=3+-~z%3]*a[q=6+(z+2)%3]-a[q-3]*a[p+3];printf("%d",s/6);}
            ^
/tmp/code.c:1:12: warning: type defaults to 'int' in declaration of 's' [-Wimplicit-int]
/tmp/code.c:1:14: warning: type defaults to 'int' in declaration of 'p' [-Wimplicit-int]
 z=12;a[12];s,p;main(q){for(;z--;)scanf("%d",a+z);for(z=9;z--;)a[z]-=a[9+z%3];for(z=3;z--;)s+=a[z]*=a[p=3+-~z%3]*a[q=6+(z+2)%3]-a[q-3]*a[p+3];printf("%d",s/6);}
              ^
/tmp/code.c:1:16: warning: return type defaults to 'int' [-Wimplicit-int]
 z=12;a[12];s,p;main(q){for(;z--;)scanf("%d",a+z);for(z=9;z--;)a[z]-=a[9+z%3];for(z=3;z--;)s+=a[z]*=a[p=3+-~z%3]*a[q=6+(z+2)%3]-a[q-3]*a[p+3];printf("%d",s/6);}
                ^~~~
/tmp/code.c: In function 'main':
/tmp/code.c:1:16: warning: type of 'q' defaults to 'int' [-Wimplicit-int]
/tmp/code.c:1:34: warning: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
 z=12;a[12];s,p;main(q){for(;z--;)scanf("%d",a+z);for(z=9;z--;)a[z]-=a[9+z%3];for(z=3;z--;)s+=a[z]*=a[p=3+-~z%3]*a[q=6+(z+2)%3]-a[q-3]*a[p+3];printf("%d",s/6);}
                                  ^~~~~
/tmp/code.c:1:34: warning: incompatible implicit declaration of built-in function 'scanf'
/tmp/code.c:1:34: note: include '<stdio.h>' or provide a declaration of 'scanf'
/tmp/code.c:1:103: warning: operation on 'p' may be undefined [-Wsequence-point]
 z=12;a[12];s,p;main(q){for(;z--;)scanf("%d",a+z);for(z=9;z--;)a[z]-=a[9+z%3];for(z=3;z--;)s+=a[z]*=a[p=3+-~z%3]*a[q=6+(z+2)%3]-a[q-3]*a[p+3];printf("%d",s/6);}
                                                                                                      ~^~~~~~~~
/tmp/code.c:1:116: warning: operation on 'q' may be undefined [-Wsequence-point]
 z=12;a[12];s,p;main(q){for(;z--;)scanf("%d",a+z);for(z=9;z--;)a[z]-=a[9+z%3];for(z=3;z--;)s+=a[z]*=a[p=3+-~z%3]*a[q=6+(z+2)%3]-a[q-3]*a[p+3];printf("%d",s/6);}
                                                                                                                   ~^~~~~~~~~~
/tmp/code.c:1:142: warning: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
 z=12;a[12];s,p;main(q){for(;z--;)scanf("%d",a+z);for(z=9;z--;)a[z]-=a[9+z%3];for(z=3;z--;)s+=a[z]*=a[p=3+-~z%3]*a[q=6+(z+2)%3]-a[q-3]*a[p+3];printf("%d",s/6);}
                                                                                                                                              ^~~~~~
/tmp/code.c:1:142: warning: incompatible implicit declaration of built-in function 'printf'
/tmp/code.c:1:142: note: include '<stdio.h>' or provide a declaration of 'printf'

strace