@echo off&setlocal enabledelayedexpansion
%1(for /f "tokens=*" %%i in ('%~s0 :^|sort /r') do ren %%i)&pause&exit
for /f "tokens=*" %%i in ('dir /ad /b /s') do (
    set "file=%%i"
    set "str1=%%~dpi"
    if "!str1!" neq "!str2!" (
       set "n=1"
    ) else set /a n+=1
      echo "!file!" "!n!_%%~nxi"
      set "str2=%%~dpi"
)
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