Kishore walked 50 m towards the north to reach the library, and then turned left and walked 68 m to reach the post office. He then turned to the south and walked 22 m, and then he took a left turn and walked 44 m to reach the bank. After that he turned right and walked 18 m and finally, he turned left and walked 48 m to reach his college. What is the total distance travelled by Kishore in the south direction during the entire journey?