There are 2002 people lined up in a line, first counting 1 to 3 from right to left according to the usual practice, and those who reported 3 stay, and the others leave the team; then regroup in the original order, and then count 1 to 3, or Those who report 3 stay, and the others leave the team. After how many times such "reporting - elimination" games, there is only one person left in the team.
有2002个人排成一列队伍，先按通常的做法自右向左1至3报数，并且报3的留下，其他人离队；再按原来的顺序重新整队，再1至3报数，还是报3的留下，其他人离队．经过多少次这样的"报数--淘汰"游戏，队伍里仅剩下一人．
<result>6</result>