import java.util.*;
import java.io.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        int n = sc.nextInt();
        int[] stays = new int[n];
        for (int i = 0; i < n; i++) {
            stays[i] = sc.nextInt();
        }
        int[][] costs = new int[n][n];
        for (int i = 0; i < n; i++) {
            Arrays.fill(costs[i], Integer.MAX_VALUE / 10);
            costs[i][i] = 0;
        }
        int m = sc.nextInt();
        for (int i = 0; i < m; i++) {
            int a = sc.nextInt();
            int b = sc.nextInt();
            int c = sc.nextInt();
            costs[a][b] = c;
            costs[b][a] = c;
        }
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < n; j++) {
                for (int k = 0; k < n; k++) {
                    costs[j][k] = Math.min(costs[j][k], costs[j][i] + costs[i][k]);
                }
            }
        }
        int ans = Integer.MAX_VALUE;
        for (int i = 1; i < n - 1; i++) {
            for (int j = 1; j < n - 1; j++) {
                if (i == j) {
                    continue;
                }
                ans = Math.min(ans, costs[0][i] + costs[i][j] + costs[j][n - 1] + stays[i] + stays[j]);
            }
        }
        System.out.println(ans);
    }
}
class Scanner {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer st = new StringTokenizer("");
    
    public Scanner() throws Exception {
        
    }
    
    public int nextInt() throws Exception {
        return Integer.parseInt(next());
    }
    
    public long nextLong() throws Exception {
        return Long.parseLong(next());
    }
    
    public double nextDouble() throws Exception {
        return Double.parseDouble(next());
    }
    
    public String nextLine() throws Exception {
        return br.readLine();
    }
    
    public String next() throws Exception {
        if (!st.hasMoreTokens()) {
            st = new StringTokenizer(br.readLine());
        }
        return st.nextToken();
    }
}