#include <bits/stdc++.h>

using namespace std;

int main()
{  

    int i,n,a[100],count=0;
    cin>>n;
    for(i=0;i<n;i++)
    {
        cin>>a[i];
        
    }
    for(i=0;i<n;i++)
    {
        if(a[i]%2==0)
        {
            count=count+(2*a[i])-2;
        }
        else if((a[i]%2!=0 )&& (a[i]!=1))
        {
            count=count+a[i]+1;
        }
        else if(a[i]==1)
        {
         count=count+1;   
        }
    }
    cout<<count;
    return 0;
}