Xiaoming and Xiaohua play games, the rules are as follows: at the beginning, everyone gets 1 point, and the kid who wins each game can multiply his own score by 3, and the kid who loses keeps the score unchanged. In the end, Xiaoming wins, and he has more points than Xiaohua The score is a multiple of 99, so how many rounds did they play at least?
小明与小华玩游戏，规则如下：开始每人都是1分，每局获胜的小朋友都可以把自己的分数乘以3，输的小朋友保持分数不变，最后小明获胜，他比小华多的分数是99的倍数，那么他们至少玩了多少局？
<result>5</result>