#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=1;i<(n+1);i++)
using ll=long long;

int main(){
    int n;
    cin>>n;
    ll sum=0;
    rep(i,n){
        ll a;
        cin>>a;
        sum+=a;
    }
    cout<<sum<<endl;
    return 0;
}