Madeline and Lily are delivering cards for the school fundraiser. They start at Lily's apartment on Adams street. They walk south 3 blocks and deliver 2 boxes of cards to Madeline's dance teacher. They walk east 4 blocks and deliver 3 boxes to Lily's aunt. Then they walk north 1 block and east 2 blocks to deliver a box to Madeline's grandparents. Finally, they go north 2 blocks, then west 3 blocks, to deliver a box to Lily's piano teacher. How many blocks are they from Lily's apartment