by@kcz146
WA
450ms
a=(`cat`) for z in {0..8};{ $[a[t=z]-=a[9+z%3],s+=z/6*a[z]*(a[++t%3+3]*a[q=++t%3]-a[q+3]*a[z%3])/6] } echo $s
51 90 10 90 08 81 41 19 99 70 02 35
/volume/CODE: line 3: 08: value too great for base (error token is "08")