#include <bits/stdc++.h>
using namespace std;

int main() {
    int N, S[60], M;
    int d[60][60] = {{}};
    const int INF = 1e8;
    cin >> N;
    for (int i = 0; i < N; i++) {
        cin >> S[i];
    }
    for (int i = 0; i < N; i++) {
        for (int j = 0; j < N; j++) {
            d[i][j] = INF;
        }
    }
    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]);
            }
        }
    }

    int ans = INF;
    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] + S[i] + S[j]);
        }
    }
    cout << ans << endl;
}