@echo off
set "folder=A" %和A文件夹放在一起,不是放在A文件夹里面%
for /d %%1 in ("%folder%\*")do (
	for /d %%2 in ("%%1\*")do xcopy /eiy "%%1" "%~dp0\new\*"
)
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:on error resume next
:sub class_bat
' 2>nul &@echo off&cls&set "folder=A" %和A文件夹放在一起,不是放在A文件夹里面%
' 2>nul &for %%1 in (%folder%)do set "folder=%%~dpnx1"
' 2>nul &(for /f %%1 in ('^(echo %folder%^&dir /s/b/ad %folder%\*^)^|cscript -nologo -e:"vbs" "%~0"')do if "%%1"=="." (echo 超出子目录层级,请重新分配目录级数!)else xcopy /eiy "%%1" "%~dp0\new\*")&pause&exit
:end sub
set ws=wsh.stdin
set regexp=new regexp
with regexp
	m=3 '是3级目录就修改为3
	.global=-1:.pattern="\\"
	s=ws.readline:n=.execute(s).count
	do
		s=ws.readline:c=.execute(s&"\").count+1
		if n+m>c then wsh.echo ".":wsh.quit
		if n+m=c then wsh.echo s
	loop until ws.atendofstream
end with
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