>>212627498if the object in the sentence is indefinite it's számítok
if it's definite it's számítom
it's dead simple actually
https://hu.wikipedia.org/wiki/%C3%81ltal%C3%A1nos_%C3%A9s_hat%C3%A1rozott_igeragoz%C3%A1s
the problem is that there's a bunch of exceptions where you alway use the definite form and nobody can agree which ones are those
https://hu.wikipedia.org/wiki/Ikes_ragoz%C3%A1s