#include <iostream>
#include <vector>

template <class T>
std::vector<T> vec(int len, T elem) { return std::vector<T>(len, elem); }

constexpr int INF = 1 << 29;

void solve() {
    int n;
    std::cin >> n;

    std::vector<int> ss(n);
    for (auto& s : ss) std::cin >> s;

    auto dist = vec(n, vec(n, INF));
    for (int v = 0; v < n; ++v) dist[v][v] = 0;

    int m;
    std::cin >> m;
    while (m--) {
        int u, v, c;
        std::cin >> u >> v >> c;
        dist[u][v] = dist[v][u] = c;
    }

    for (int j = 0; j < n; ++j) {
        for (int i = 0; i < n; ++i) {
            for (int k = 0; k < n; ++k) {
                dist[i][k] = std::min(dist[i][k], dist[i][j] + dist[j][k]);
            }
        }
    }

    int ans = INF;
    for (int u = 1; u < n - 1; ++u) {
        for (int v = 1; v < n - 1; ++v) {
            if (u == v) continue;
            ans = std::min(ans, dist[0][u] + ss[u] + dist[u][v] + ss[v] + dist[v][n - 1]);
        }
    }

    std::cout << ans << "\n";
}

int main() {
    std::cin.tie(nullptr);
    std::ios::sync_with_stdio(false);

    solve();

    return 0;
}