Majority Element II

class Solution {
public:
    vector<int> majorityElement(vector<int>& nums) {
         unordered_map<int,int> mp;
        int n= nums.size();
        for(int i=0;i<n;i++)
        {
            mp[nums[i]]++;            
        }
     // if(n<=2)  return nums;
        vector<int> ans;
        int div=round(n/3);
          //int div=(n/3);
        for(auto s : mp)
        {
            if(s.second > div)
            {
                ans.push_back(s.first);
            }
        }
        
        return ans;
    }
};