cy, 65 bytes

Result

WA

Duration

642ms

Code [DL]

0 &=s :>R exec
{&=x {3 --> $x -} 4 times ->} 3 times

stack :r :<

stdin

98 08 14
89 87 81
35 87 95
98 16 95

stdout

[0, 0, 0, 0, -8.0, -81, -9, 71, -14, -63, 71, 0]

stderr

strace