#include "bits/stdc++.h"
#define rep(i,a,n) for(int i=a;i<(int)(n);i++)
using namespace std;
int main(){
  int n,sum;
  cin>>n;
  sum=0;
  vector<int> a[n];
  rep(i,0,n){
    cin>>a[i];
	sum+=a[i]+1;  
  }
  cout<<sum<<endl;
}