In a bucket and ball race, a bucket is placed at the starting point, which is 5m from the first ball, and the other balls are placed 3m a part in a straight line. There are ten balls in the line.

A competitor starts from the bucket, pick up the nearest ball, runs back with it, drops it in the bucket, runs back to pick up the next ball, runs to the bucket to drop it, and she continues in the same way until all the balls are in the bucket. Then the total distance the competitor has to run is