INIT

#include <bits/stdc++.h>
using i128 = __int128;
using namespace std;
#ifdef LOCAL
#define deb(x) cerr<<"L"<<__LINE__<<": "<<#x<<" = "<<(x)<<endl
#else
#define deb(x)
#endif
#define endl "\n"
#define alls(x)  (x).begin(),(x).end()

void solve() {
    int n;
    cin >> n;
    vector<int>a(n + 1);
    deb(n);
    for (int i = 1; i <= n; i++)
        cin >> a[i];
    for (int i = 1; i <= n; i++)
        deb(a[i]);
    int ans = accumulate(alls(a), 0);
    cerr << ans << endl;
    deb(ans);
    cout << ans << endl;
}

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
#ifdef LOCAL
    double sttime = clock();
    freopen("in.txt", "r", stdin);
    freopen("out.txt", "w", stdout);
#endif
    int t = 1;
    while (t--)
        solve();
#ifdef LOCAL
    double edtime = clock();
    cerr << "time: " << (double)(edtime - sttime) / CLOCKS_PER_SEC * 1000 << endl;
#endif
    return 0;
}

TEST

#include <bits/stdc++.h>
using i128 = __int128;
using namespace std;
#ifdef LOCAL
#define deb(x) (void)(cerr<<"L"<<__LINE__)<<": "<<#x<<" = "<<(x)<<endl)
#else
#define deb(x)
#endif
#define endl "\n"

void solve() {
    array<int, 3>c{1, 2, 3};
    for (auto i : c)
        cout << i << " ";
    i128 tmp = 0;
    tmp++;
    cout << "tmp" << endl;
    map<int, int>mp;
    mp[1] = 2;
    mp[3] = 4;
    auto dfs = [&](auto self, int u) {
        if (u > 10)
            return ;
        cout << "dfs" << " " << u << endl;
        self(self, u + 1);
    };
    dfs(dfs, 0);
    for (auto [x, y] : mp)
        cout << x << " " << y << endl;
    vector in(2, vector<int>(2, 1));
    for (auto x : in) {
        for (auto y : x) {
            cout << y << " ";
        }
        cout << endl;
    }
    vector<pair<int, int>>p(3);
    p[1] = {1, 2};
    p[2] = {3, 4};
    for (auto [x, y] : p)
        cout << x << " " << y << endl;
}

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
#ifdef LOCAL
    double sttime = clock();
    freopen("in.txt", "r", stdin);
    freopen("out.txt", "w", stdout);
    double edtime = clock();
    cerr << "time: " << (double)(edtime - sttime) / CLOCKS_PER_SEC * 1000 << endl;
#endif
    int t = 1;
    while (t--)
        solve();
    return 0;
}