by@yamayu832
WA
477ms
a=(`cat`) for z in {0..8};{ t=$[a[z]-=a[9+z%3]] s=$[s+=z/6*a[z]*(a[p=3+(z+1)%3]*a[q=(z+2)%3]-a[q+3]*a[p-3])] } echo $[s/6]
29 59 25 84 07 47 58 88 05 08 27 63
0
/volume/CODE: line 3: 08: value too great for base (error token is "08")