77七

@echo off
set input=1.txt
set output=2.txt
for /f "tokens=1* delims=[]" %%a in ('find /n "@" ^<"%input%"') do (
	set _%%a=1
)
(for /f "tokens=1* delims=[]" %%a in ('find /n /v "" ^<"%input%"') do (
	if defined _%%a (
		echo *,,3000-0
	) else (
		echo=%%b
	)
))>"%output%"
pause
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