#include <bits/stdc++.h>
vector<int> majorityElementII(vector<int> &arr){    // Write your code here.    map<int, int>mpp;    vector<int>v;    int n = arr.size();    for(int i =0; i<n; i++){        mpp[arr[i]]++;    }
    for(auto it : mpp){        if(it.second > n/3){            v.push_back(it.first);        }    }    return v;
}