Aditya walked 50 m towards the north, then turned left and walked 68 m to reach the bus stand. He then turned to the south and walked 22 m, and then took a left turn and walked 44 m to reach the medical shop. After that he turned right and walked 18 m, and finally he turned left and walked 48 m to reach the library. What is shortest distance between the starting and the ending points, and in which direction is Aditya from the starting point?