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Travel along the roads from Start to Goal. At each intersection follow one of the arrows. That is, you can turn in a certain direction only when there is a curved line in that direction, and you can go straight only when there is a straight line. You can leave an intersection only at the head of an arrow. U-turns are not allowed. So: At the first intersection, you can only go straight. At the second intersection you can again only go straight. At the third inter- |