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CODE: [Copy to clipboard]@echo off&Setlocal
set /p no=<no.txt
:loop
set /a no-=1
if %no% gtr 0 (call :getline %no%)
if "%string:~0,2%" == "20" (echo %string%) else (goto :loop)
endlocal
pause&exit/b
:getline
set string=
for /f "skip=%1 delims=" %%a in (a.txt) do (
set string=%%a&&goto :eof)
CODE: [Copy to clipboard]@echo off
set /p no=<no.txt
for /f "tokens=1* delims=:" %%a in ('findstr /n .* a.txt') do (
set var%%a=%%b
if %%a equ %no% goto loop
)
:loop
call set num=%%var%no%%%
if "%num:~0,2%"=="20" (echo %num%) else set /a no-=1&goto loop
pause
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