by@kcz146
WA
489ms
print(system2("bash -c a=(`cat`) for z in {0..8};{ $[a[z]-=a[9+z%3],s+=z/6*a[z]*(a[p=3+(z+1)%3]*a[q=(z+2)%3]-a[q+3]*a[p-3])/6] } echo $s"))
45 39 53 18 48 50 88 77 10 06 45 18
sh: 1: Syntax error: "(" unexpected