@echo off&setlocal enabledelayedexpansion
for /f "delims=" %%a in (a.txt) do (
	for %%b in (%%a) do (
		for /f "tokens=1*" %%c in ("!last!") do (
			set /a c=1%%b-1%%c,c=c*101
			if !c! lss 0 (set cha=!cha!  -!c:~-2!) else set cha=!cha!   !c:~-2!
		set last=%%d
		)
		)
	if defined cha echo !cha!
	set cha=
	set last=%%a
)
pause
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@echo off
setlocal enabledelayedexpansion
(for /f "delims=" %%a in (a.txt) do (
    for %%b in (%%a) do (
        for /f "tokens=1*" %%c in ("!last!") do (
            set /a c=1%%b-1%%c,c=c*101
            if !c! lss 0 (
                set cha=!cha!  -!c:~-2!
            ) else (
                set cha=!cha!   !c:~-2!
            )
            set last=%%d
        )
    )
    echo %%a !cha!
    set cha=
    set last=%%a
))>b.txt
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