爱丽丝有n种糖果,其中第一个糖果是糖果类型[i].爱丽丝注意到她开始增加体重,所以她去看医生.医生建议爱丽丝只吃她拥有的糖果的n / 2.爱丽丝非常喜欢她的糖果,她想吃最多的不同类型的糖果,同时仍然遵循医生的建议.给出长度n的整数数列糖果类型,返回她只吃n / 2的不同类型的糖果的最大数量.
To solve this problem, you can first count the number of different types of candies Alice has using a set or a hash table. Then, you can compare the number of unique candies with n / 2 and return the minimum of the two, since Alice can only eat up to n / 2 candies. This can be done using the min() function in Python.

Here's a code example:

```
def max_candies(candyType):
    unique_candies = set(candyType)
    return min(len(unique_candies), len(candyType) // 2)
```

This function takes in the candyType array and returns the maximum number of different types of candies Alice can eat.