leetcode

0 class Solution {

1 public:

2 int distinctAverages(vector<int> &nums) {

3 unordered_set<int> us;

4

5 sort(nums.begin(), nums.end());

6 for (int i = 0, j = nums.size() - 1; i < j; i++, j--)

7 us.insert(nums[i] + nums[j]);

8

9 return us.size();

10 }

11 };