@echo off
setlocal enabledelayedexpansion
for /f "delims=" %%a in ('dir /b /s /ad') do (
    echo 正在处理文件夹 %%a
    pushd "%%a"
    set n=0
    for /f "delims=" %%b in ('dir /b /a-d *.txt') do (
        set /a n+=1
        ren "%%b" "%%~nxa-!n!%%~xb"
    )
    popd
)
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ren "%%b" "%%~nxa-%%b"
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