Untitled

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#include <bits/stdc++.h>

using namespace std;
int func(vector<int>&nums)
{
    unordered_map<int,vector<int>>mpp;
    int ans=0;
      vector<pair<int,int>>n;
    for(int i=0;i<nums.size();i++)
    {
        n.push_back({nums[i],nums[i]});
        mpp[nums[i]].push_back(i);
    }
    for(int i=0;i<n.size();i++)
    {
        ans+=n[i].second;
        int k=n[i].first;
        for(auto&x:mpp[k])
        {
            
            if(x>i)
            n[x].second=ceil((n[x].second)/2.0);
        }
        
    }
    
    return ans;
    
    
}

int main()
{
    int n;
    cin>>n;
    vector<int>nums;
    for(int i=0;i<n;i++)
    {
        int x;
        cin>>x;
        nums.push_back(x);
    }
    cout<<func(nums);

    return 0;
}