d-gdc, 101 bytes

Result

AC

Duration

1298ms

Code [DL]

void main(){import std.range,std.stdio;stdin.byLine.tee!(l=>write(l[1]==l[2]?l[2]:l[4])).walkLength;}

stdin

218 112
587 116
349 339
639 162
693 995
787 784
418 915
977 995
242 895
677 883
284 833
877 578
339 961
581 345
511 161
353 537
718 281
668 625
462 898
766 654
792 196
677 775
379 978
377 772
655 351
167 674
148 829
249 994
259 293
811 827
574 443
233 671

stdout

11319797878793152686179756892143

stderr

strace

10    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7ffee2b39610 /* 6 vars */) = 0
11    execve("/usr/bin/realpath", ["realpath", "/volume/CODE"], 0x55d600e76c00 /* 6 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("/bin/ln", ["ln", "-sf", "/volume/CODE", "/tmp/code.d"], 0x55d600e76c20 /* 6 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} ---
13    execve("/usr/bin/gdc", ["gdc", "/tmp/code.d", "-o", "/tmp/code"], 0x55d600e76c18 /* 6 vars */) = 0
14    execve("/usr/lib/gcc/x86_64-linux-gnu/8/cc1d", ["/usr/lib/gcc/x86_64-linux-gnu/8/"..., "/tmp/code.d", "-quiet", "-dumpbase", "code.d", "-mtune=generic", "-march=x86-64", "-auxbase", "code", "-imultiarch", "x86_64-linux-gnu", "-o", "/tmp/ccNUNBZT.s"], 0x23ba5e0 /* 11 vars */) = 0
14    +++ exited with 0 +++
13    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14, si_uid=0, si_status=0, si_utime=15, si_stime=4} ---
15    execve("/bin/as", ["as", "--64", "-o", "/tmp/cckpeBgo.o", "/tmp/ccNUNBZT.s"], 0x23ba5e0 /* 11 vars */) = -1 ENOENT (No such file or directory)
15    execve("/usr/local/sbin/as", ["as", "--64", "-o", "/tmp/cckpeBgo.o", "/tmp/ccNUNBZT.s"], 0x23ba5e0 /* 11 vars */) = -1 ENOENT (No such file or directory)
15    execve("/usr/local/bin/as", ["as", "--64", "-o", "/tmp/cckpeBgo.o", "/tmp/ccNUNBZT.s"], 0x23ba5e0 /* 11 vars */) = -1 ENOENT (No such file or directory)
15    execve("/usr/sbin/as", ["as", "--64", "-o", "/tmp/cckpeBgo.o", "/tmp/ccNUNBZT.s"], 0x23ba5e0 /* 11 vars */) = -1 ENOENT (No such file or directory)
15    execve("/usr/bin/as", ["as", "--64", "-o", "/tmp/cckpeBgo.o", "/tmp/ccNUNBZT.s"], 0x23ba5e0 /* 11 vars */) = 0
15    +++ exited with 0 +++
13    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
16    execve("/usr/lib/gcc/x86_64-linux-gnu/8/collect2", ["/usr/lib/gcc/x86_64-linux-gnu/8/"..., "-plugin", "/usr/lib/gcc/x86_64-linux-gnu/8/"..., "-plugin-opt=/usr/lib/gcc/x86_64-"..., "-plugin-opt=-fresolution=/tmp/cc"..., "-plugin-opt=-pass-through=-lgcc_"..., "-plugin-opt=-pass-through=-lgcc", "-plugin-opt=-pass-through=-lm", "-plugin-opt=-pass-through=-lpthr"..., "-plugin-opt=-pass-through=-ldl", "-plugin-opt=-pass-through=-lc", "-plugin-opt=-pass-through=-lgcc_"..., "-plugin-opt=-pass-through=-lgcc", "--build-id", "--eh-frame-hdr", "-m", "elf_x86_64", "--hash-style=gnu", "--as-needed", "-dynamic-linker", "/lib64/ld-linux-x86-64.so.2", "-pie", "-z", "now", "-z", "relro", "-o", "/tmp/code", "/usr/lib/gcc/x86_64-linux-gnu/8/"..., "/usr/lib/gcc/x86_64-linux-gnu/8/"..., "/usr/lib/gcc/x86_64-linux-gnu/8/"..., "-L/usr/lib/gcc/x86_64-linux-gnu/"..., ...], 0x23bac60 /* 13 vars */) = 0
17    execve("/usr/bin/ld", ["/usr/bin/ld", "-plugin", "/usr/lib/gcc/x86_64-linux-gnu/8/"..., "-plugin-opt=/usr/lib/gcc/x86_64-"..., "-plugin-opt=-fresolution=/tmp/cc"..., "-plugin-opt=-pass-through=-lgcc_"..., "-plugin-opt=-pass-through=-lgcc", "-plugin-opt=-pass-through=-lm", "-plugin-opt=-pass-through=-lpthr"..., "-plugin-opt=-pass-through=-ldl", "-plugin-opt=-pass-through=-lc", "-plugin-opt=-pass-through=-lgcc_"..., "-plugin-opt=-pass-through=-lgcc", "--build-id", "--eh-frame-hdr", "-m", "elf_x86_64", "--hash-style=gnu", "--as-needed", "-dynamic-linker", "/lib64/ld-linux-x86-64.so.2", "-pie", "-z", "now", "-z", "relro", "-o", "/tmp/code", "/usr/lib/gcc/x86_64-linux-gnu/8/"..., "/usr/lib/gcc/x86_64-linux-gnu/8/"..., "/usr/lib/gcc/x86_64-linux-gnu/8/"..., "-L/usr/lib/gcc/x86_64-linux-gnu/"..., ...], 0x7ffd486c1920 /* 13 vars */) = 0
17    +++ exited with 0 +++
16    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=17, si_uid=0, si_status=0, si_utime=4, si_stime=3} ---
16    +++ exited with 0 +++
13    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
13    +++ exited with 0 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=13, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
19    execve("/tmp/code", ["/tmp/code"], 0x55d600e76bd0 /* 6 vars */ <unfinished ...>
18    execve("/bin/cat", ["cat", "-"], 0x55d600e76be8 /* 6 vars */) = 0
19    <... execve resumed> )            = 0
18    +++ exited with 0 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
19    +++ exited with 0 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
20    execve("/bin/rm", ["rm", "/tmp/code.d", "/tmp/code"], 0x55d600e76bd0 /* 6 vars */) = 0
20    +++ exited with 0 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
10    +++ exited with 0 +++