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

int main(){
    int N, M;
    cin >> N;
    vector<int> S(N);
    for (int& x : S) cin >> x;

    cin >> M;
    vector<vector<int>> D(N, vector<int>(N, INT_MAX/4));
    for (int i = 0; i < N; i++) D[i][i] = 0;
    for (int i = 0; i < M; i++){
        int u, v, w;
        cin >> u >> v >> w;
        D[u][v] = D[v][u] = w;
    }

    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 = INT_MAX;
    for (int i = 0; i < N; i++){
        for (int j = 0; j < N; j++){
            if (i == 0 || j == 0 || i == N-1 || j == N-1 || i == j) continue;
            ans = min(ans, S[i]+S[j]+D[0][i]+D[i][j]+D[j][N-1]);
        }
    }
    cout << ans << endl;
}