#include<bits/stdc++.h>
using namespace std;
typedef long long int ll;
int main()
{
        ll n;
        cin>>n;
        ll i,a[n];
        ll sum=0,total=0;
        for(i=0;i<n;i++)
        {
            sum=0;
            cin>>a[i];
            sum+=1;
          //  cout<<"value of sum is now:"<<" "<<sum<<endl;
            ll k=a[i]/2;
          //  cout<<"value of k is now:"<<" "<<k<<endl;
            total+=sum+k+a[i];
        }
        cout<<total<<endl;
    return 0;
}