nadesiko, 295 bytes

Result

WA

Duration

680ms

Code [DL]

i=0
A=空配列
標準入力取得した時には(s)
 t=sを「 」で区切る
 A[3*i]=t@0
 A[3*i+1]=t@1
 A[3*i+2]=t@2
iで1から3まで繰り返す
 jで0から2まで繰り返す
  B[3*i+j]=A[3*i+j]-A[j]
((A@0*A@4*A@8+A@1*A@5*A@6+A@2*A@3*A@7-A@0*A@5*A@7-A@2*A@4*A@6-A@8*A@1*A@3)/6)と表示

stdin

46 35 02
39 93 82
57 64 72
83 76 66

stdout

stderr

undefined:40
    __v0.line=9;__vars["B"]/*?:9*/[(parseFloat((parseFloat(3) * parseFloat(__vars["i"]))) + parseFloat(__vars["j"]))] = (parseFloat(__varslist[2]["A"][(parseFloat((parseFloat(3) * parseFloat(__vars["i"]))) + parseFloat(__vars["j"]))]) - parseFloat(__varslist[2]["A"][__vars["j"]]));
                                                                                                                      ^

TypeError: Cannot set property '3' of undefined
    at eval (eval at _run (/usr/lib/node_modules/nadesiko3/src/nako3.js:149:7), <anonymous>:40:119)
    at Interface.<anonymous> (/usr/lib/node_modules/nadesiko3/src/plugin_node.js:470:9)
    at emitOne (events.js:116:13)
    at Interface.emit (events.js:211:7)
    at Interface._onLine (readline.js:282:10)
    at Interface._normalWrite (readline.js:424:12)
    at ReadStream.ondata (readline.js:141:10)
    at emitOne (events.js:116:13)
    at ReadStream.emit (events.js:211:7)
    at addChunk (_stream_readable.js:263:12)

strace