@echo off
 
set /p line=
for /f "tokens=1-3 delims=, " %%x in ("%line%") do (
	set /a j=%%x
	set /a k=%%y
	set /a l=%%z
echo %%x
echo %%y
echo %%z
echo end
	)
for /f "tokens=4-6 delims= " %%x in ("%line%") do (
	set /a a=%%x - %j%
	set /a b=%%y - %k%
	set /a c=%%z - %l%
)
for /f "tokens=7-9 delims= " %%x in ("%line%") do (
	set /a d=%%x - %j%
	set /a e=%%y - %k%
	set /a f=%%z - %l%
)
for /f "tokens=10-12 delims= " %%x in ("%line%") do (
	set /a g=%%x - %j%
	set /a h=%%y - %k%
	set /a i=%%z - %l%
)
set /a v=(%a%*%e%*%i%+%b%*%f%*%g%+%c%*%d%*%h%-%a%*%h%*%f%-%b%*%i%*%d%-%c%*%g%*%e%)/6
echo %v%