olang, 35 bytes

Result

AC

Duration

846ms

Code [DL]

48* {M]1&\2&\@@.@= {o;} {\3&o;;}?}d

stdin

831 313
936 631
715 176
124 822
983 396
155 661
765 593
929 293
229 998
781 884
139 887
145 797
487 118
211 161
198 627
811 872
484 123
911 418
147 849
631 135
633 944
411 115
137 347
274 448
388 779
997 993
311 117
323 172
377 276
966 636
396 465
771 315

stdout

36183552988711611181313489117643

stderr

strace

10    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7fffccf943f0 /* 7 vars */) = 0
11    execve("/bin/cat", ["cat", "-"], 0x55dc7be8cd28 /* 7 vars */) = 0
11    +++ exited with 0 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
12    execve("/root/o", ["/root/o", "/volume/CODE"], 0x55dc7be8cd30 /* 7 vars */) = 0
12    +++ exited with 0 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
10    +++ exited with 0 +++