v-vim, 32 bytes

Result

AC

Duration

876ms

Code [DL]

:%s/.* \(.\)\1.\|..\(.\).*/\1\2/

stdin

615 889
455 554
941 446
933 739
633 353
122 312
424 342
976 763
562 366
576 754
971 942
517 171
623 918
342 585
455 731
591 996
737 378
963 319
936 639
588 445
497 797
875 524
628 723
649 114
774 442
377 797
455 758
129 212
911 772
288 883
193 136
662 221

stdout

8
5
4
3
3
2
4
6
2
6
1
7
3
2
5
9
7
3
6
4
7
5
8
1
4
7
5
9
7
8
3
2

stderr

strace

11    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7ffed416e160 /* 9 vars */) = 0
12    execve("/bin/cat", ["cat", "-"], 0x562326e7ed00 /* 9 vars */) = 0
12    +++ exited with 0 +++
11    --- 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("/root/V/v", ["/root/V/v", "/volume/CODE", "-f", "/tmp/input"], 0x562326e7ed38 /* 9 vars */) = 0
15    execve("/usr/bin/readlink", ["readlink", "-e", "--", "/root/V/v"], 0x56149f83bc20 /* 10 vars */) = 0
15    +++ exited with 0 +++
14    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
14    execve("/usr/bin/dirname", ["dirname", "--", "/root/V/v"], 0x56149f83b3c0 /* 10 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=0, si_stime=0} ---
16    execve("/usr/bin/vim", ["vim", "-Nnes", "/tmp/input", "-u", "/root/V/vim/init.vim", "-i", "NONE", "-c", "call Execute_Program('/volume/CO"..., "-c", "%p", "-c", "q!"], 0x56149f83abc0 /* 11 vars */ <unfinished ...>
17    execve("/usr/bin/head", ["head", "-c", "-1"], 0x56149f83abc0 /* 11 vars */) = 0
16    <... execve resumed>)             = 0
16    +++ exited with 0 +++
17    +++ exited with 0 +++
13    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16, si_uid=0, si_status=0, si_utime=1, si_stime=0} ---
13    +++ exited with 0 +++
11    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=13, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
11    +++ exited with 0 +++