stuck, 59 bytes

Result

WA

Duration

498ms

Code [DL]

ssss["x:map(int,x.split())"mT"x:[x[3]-e for e in x]"mT]yggg

stdin

14 72 31
90 89 87
35 20 89
49 39 03

stdout

[35, -33, -28][-41, -50, -84][14, 19, -86]

stderr

strace