If I gave my 30 day notice in the middle of the month do i pay a full rent next month?

I gave my landlord and roommate (lease holder) my 30 days notice in the middle of the month. I am moving out in the middle of the following month. Do I have to pay the full month rent of the month I am moving out, or do I only pay the 2 weeks that I'm living there? I live in Manitoba, Canada.