d-gdc, 112 bytes

Result

AC

Duration

1532ms

Code [DL]

import std.stdio;void main(){int l,r;for(;~scanf("%d%d",&l,&r);){printf("%d\n",r%111==0||l%100%11?r/100:l%10);}}

stdin

312 249
889 588
299 427
288 845
372 225
471 212
966 665
789 822
878 788
713 377
622 332
484 382
942 724
541 413
533 934
949 441
765 663
572 799
872 132
477 775
244 332
977 349
411 515
377 799
319 665
446 585
437 735
265 557
989 989
971 441
752 654
263 786

stdout

2
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1
7
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1
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6
7

stderr

strace

10    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7ffd1e30a150 /* 6 vars */) = 0
11    execve("/usr/bin/realpath", ["realpath", "/volume/CODE"], 0x560a42fc8c00 /* 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"], 0x560a42fc8c20 /* 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"], 0x560a42fc8c18 /* 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/cccMqYa7.s"], 0x8885e0 /* 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=7, si_stime=2} ---
15    execve("/bin/as", ["as", "--64", "-o", "/tmp/cc7lNs0U.o", "/tmp/cccMqYa7.s"], 0x8885e0 /* 11 vars */) = -1 ENOENT (No such file or directory)
15    execve("/usr/local/sbin/as", ["as", "--64", "-o", "/tmp/cc7lNs0U.o", "/tmp/cccMqYa7.s"], 0x8885e0 /* 11 vars */) = -1 ENOENT (No such file or directory)
15    execve("/usr/local/bin/as", ["as", "--64", "-o", "/tmp/cc7lNs0U.o", "/tmp/cccMqYa7.s"], 0x8885e0 /* 11 vars */) = -1 ENOENT (No such file or directory)
15    execve("/usr/sbin/as", ["as", "--64", "-o", "/tmp/cc7lNs0U.o", "/tmp/cccMqYa7.s"], 0x8885e0 /* 11 vars */) = -1 ENOENT (No such file or directory)
15    execve("/usr/bin/as", ["as", "--64", "-o", "/tmp/cc7lNs0U.o", "/tmp/cccMqYa7.s"], 0x8885e0 /* 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/"..., ...], 0x888c60 /* 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/"..., ...], 0x7ffded5b8f40 /* 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=3, 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} ---
18    execve("/bin/cat", ["cat", "-"], 0x560a42fc8be8 /* 6 vars */ <unfinished ...>
19    execve("/tmp/code", ["/tmp/code"], 0x560a42fc8bd0 /* 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"], 0x560a42fc8bd0 /* 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 +++