rust, 285 bytes

Result

WA

Duration

627ms

Code [DL]

use std::*;fn main(){let mut b=String::new();stdin().read_to_string(&mut b);let mut x:Vec<i32>=b.trim().split(|c|c<'!').map(|e|e.parse().unwrap()).collect();for i in 0..9{x[i]-=x[9+i%3]}print!("{}",(x[0]*(x[5]*x[7]-x[4]*x[8])+x[1]*(x[3]*x[8]-x[5]*x[6])+x[2]*(x[4]*x[6]-x[3]*x[7]))/6)}

stdin

91 65 41
92 06 11
67 39 45
90 37 05

stdout

stderr

error[E0425]: cannot find function `stdin` in this scope
 --> /tmp/code.rs:1:46
  |
1 | use std::*;fn main(){let mut b=String::new();stdin().read_to_string(&mut b);let mut x:Vec<i32>=b.trim().split(|c|c<'!').map(|e|e.parse().unwrap()).collect();for i in 0..9{x[i]-=x[9+i%3]}print!("{}",(x[0]*(x[5]*x[7]-x[4]*x[8])+x[1]*(x[3]*x[8]-x[5]*x[6])+x[2]*(x[4]*x[6]-x[3]*x[7]))/6)}
  |                                              ^^^^^ not found in this scope
  |
help: possible candidate is found in another module, you can import it into scope
  |
1 | use std::io::stdin;
  |

error: aborting due to previous error

/bin/script: line 16: /tmp/code: not found
rm: can't remove '/tmp/code': No such file or directory

strace