#include <iostream>
using namespace std;

int main() {
       long long int n, a[1000000],i,s=0;
  cin>>n;
for(i=0;i<n;i++)
  cin>>a[i] ;
for(i=0;i<n;i++)
{  if(a[i]==1)
      s=s+1;
   else if(a[i]%2==0)
      s=s+(a[i]-1)*2;
    else if(a[i]%2!=0)
      s=s+a[i]+1;
}
cout<<s;
	return 0;
}