for %%a in (a.txt) do set /a b=64*1024-%%~za
fsutil file createnew tmp %b%
copy /b a.txt+b.txt a.txt
del tmp
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@echo off&setlocal enabledelayedexpansion
cmd /u/c echo;>2.$
findstr/vrc:$ 2.$>1.$
set n=1
for /l %%a in (1 1 16) do (
	set /a "n+=(m=n)"
	set list=!n! !list!
	copy>nul /b !m!.$+!m!.$ !n!.$
)
for %%a in (test.txt) do (
	set /a z=0x10000-%%~za
	for %%b in (!list!1) do (
		if !z! gtr %%b (
			set /a "z-=%%b"
			copy /b test.txt+%%b.$ test.txt
		)
	)
)
copy /b test.txt+1.$ test.txt
del /f /q *.$
pause
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@goto :start
r bx
1
r cx
0
w
q

:start
@echo off
chcp 437 & graftabl 936 & cls
pushd %~sdp1
ren %~snx1 %~sn1.tmp
debug %~sn1.tmp < %0 >nul
ren %~sn1.tmp "%~nx1"
popd
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