How to modify bash command to change permissions

How to modify bash command to change permissions



I have this bash command to modify all files and folders permissions

inside a root folder:

find . -type d -exec chmod 755 {} \;

find . -type f -exec chmod 644 {} \;

it work ok. What i should do to to exclude some folders for change

permissions inside the root folder(where the bash is executed). For

example, if i want to keep folder permission for folder "A" and folder "B"

Thanks in advance