#include<bits/stdc++.h>
using std::cin;
using std::cout;
using std::endl;
using std::vector;
using ll=long long;
const int mod=1e9+7;
int main(){
    int N; cin>>N;
    vector<int> A(N);
    for(int i=0;i<N;i++) cin>>A[i];
    {
        vector<int> B=A;
        sort(B.begin(),B.end());
        if(B[N-1]==1){
            cout<<N<<endl;
            return 0;
        }
    }
    ll ans=0;
    for(int i=0;i<N;i++) ans+=A[i];
    cout<<ans<<endl;
}