I know russian very well.So i shortly translate all procedure done here.
They patched original 20A bin file , changing system recovery.img with clocworkmod recovery.img touch version.
Download 20A.bin extract it,and put somewhere in your computer.
and below there is a CWM flashable superuser.zip.
Download it and put to your Sd kart.Do not extract.
Then simply flash that patched 20A bin file with smart flash procedure posted here from radkor
After finished flashing with smartflash tool go to cwm recovery and install superuser.zip
and you get rooted original 20A ginger.
Nice option for flashing and rooting
but we do not have 20N bin file yet.
we have only indian version 20B bin file, redpik posted it above