Grandma Zhang went to the supermarket to buy 12 boxes of bright milk, and found that these milks need to be packed in 2 identical bags, and each bag can only hold 10 boxes at most. How many different ways does Grandma Zhang have to dress up?
张奶奶去超市买了12盒光明牛奶，发现这些牛奶需要装在2个相同的袋子里，并且每个袋子最多只能装10盒．张奶奶一共有几种不同的装法？
<result>5</result>