d-gdc, 82 bytes

Result

AC

Duration

1456ms

Code [DL]

import std.stdio;void main(){foreach(string s;stdin.lines)write=s[s[1]-s[2]?4:2];}

stdin

922 226
273 559
816 914
565 756
144 448
136 661
241 883
591 159
954 554
723 278
185 652
744 438
341 281
125 856
699 791
612 544
682 223
297 763
873 171
286 885
744 433
244 772
366 724
313 314
278 785
567 681
528 823
744 722
322 664
641 419
822 427
374 336

stdout

25974681526428952718446376842423

stderr

strace

10    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7ffcf6ec35a0 /* 6 vars */) = 0
11    execve("/usr/bin/realpath", ["realpath", "/volume/CODE"], 0x55b3d029ec00 /* 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"], 0x55b3d029ec20 /* 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"], 0x55b3d029ec18 /* 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/cctzch6Q.s"], 0x1daa5e0 /* 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=9, si_stime=3} ---
15    execve("/bin/as", ["as", "--64", "-o", "/tmp/ccQFmo6q.o", "/tmp/cctzch6Q.s"], 0x1daa5e0 /* 11 vars */) = -1 ENOENT (No such file or directory)
15    execve("/usr/local/sbin/as", ["as", "--64", "-o", "/tmp/ccQFmo6q.o", "/tmp/cctzch6Q.s"], 0x1daa5e0 /* 11 vars */) = -1 ENOENT (No such file or directory)
15    execve("/usr/local/bin/as", ["as", "--64", "-o", "/tmp/ccQFmo6q.o", "/tmp/cctzch6Q.s"], 0x1daa5e0 /* 11 vars */) = -1 ENOENT (No such file or directory)
15    execve("/usr/sbin/as", ["as", "--64", "-o", "/tmp/ccQFmo6q.o", "/tmp/cctzch6Q.s"], 0x1daa5e0 /* 11 vars */) = -1 ENOENT (No such file or directory)
15    execve("/usr/bin/as", ["as", "--64", "-o", "/tmp/ccQFmo6q.o", "/tmp/cctzch6Q.s"], 0x1daa5e0 /* 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=0} ---
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/"..., ...], 0x1daac60 /* 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/"..., ...], 0x7fff8a338210 /* 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=8, si_stime=2} ---
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} ---
18    execve("/bin/cat", ["cat", "-"], 0x55b3d029ebe8 /* 6 vars */ <unfinished ...>
19    execve("/tmp/code", ["/tmp/code"], 0x55b3d029ebd0 /* 6 vars */) = 0
18    <... 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"], 0x55b3d029ebd0 /* 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 +++