#include <bits/stdc++.h>
using namespace std;
using i64 = int64_t;
using vi = vector<i64>;
using vvi = vector<vi>;

int main() {
    int n;
    cin >> n;
    vi ss(n);
    for (int i = 0; i < n; i++) {
        cin >> ss[i];
    }

    vvi d(n, vi(n, 1e9));
    int m;
    cin >> m;
    for (int i = 0; i < m; i++) {
        int a, b, c;
        cin >> a >> b >> c;
        d[a][b] = c;
        d[b][a] = c;
    }

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

    i64 ans = 1e9;
    for (int i = 1; i < n - 1; i++) {
        for (int j = 1; j < n - 1; j++) {
            if (i == j) continue;
            ans = min(ans, d[0][i] + d[i][j] + d[j][n - 1] + ss[i] + ss[j]);
        }
    }
    cout << ans << endl;
}