#include <bits/stdc++.h>

using namespace std;



int main() {
   int n,i;
    cin>>n;
    int a[n];
    int x = 0;
    for(i = 0;i<n;i++)
    {
        cin>>a[i];
        if(a[i] % 2 == 0)
        {
            x+=2*(a[i]-1);
        }
        else if(a[i] == 1)
        {
            x+=1;
        }
        else
        {
            x+=(a[i]+1);
        }
    }
    cout<<x<<endl;
}