using System;
using System.IO;
using System.Linq;
using System.Text;
using System.Diagnostics;
using System.Collections.Generic;
using System.Text.RegularExpressions;
using Enu = System.Linq.Enumerable;

class Program
{
    static readonly int INF = (int)1e8;

    void Solve()
    {
        int N = reader.Int();
        int[] Stay = reader.IntArray(N);
        int M = reader.Int();
        int[,] Cost = new int[N, N];
        Fill(Cost, INF);
        for (int i = 0; i < M; i++)
        {
            int a = reader.Int(), b = reader.Int(), c = reader.Int();
            CheckMin(ref Cost[a, b], c);
            CheckMin(ref Cost[b, a], c);
        }
        for (int i = 0; i < N; i++)
            Cost[i, i] = 0;
        for (int c = 0; c < N; c++)
            for (int a = 0; a < N; a++)
                for (int b = 0; b < N; b++)
                    CheckMin(ref Cost[a, b], Cost[a, c] + Cost[c, b]);
        int ans = INF;
        for (int a = 1; a < N - 1; a++)
            for (int b = 1; b < N - 1; b++)
                if (a != b)
                    CheckMin(ref ans, Cost[0, a] + Stay[a] + Cost[a, b] + Stay[b] + Cost[b, N - 1]);

        Console.WriteLine(ans);
    }

    void CheckMin(ref int a, int b) { if (b < a) a = b; }
    void Fill<T>(T[,] a, T val)
    {
        for (int i = 0; i < a.GetLength(0); i++)
            for (int j = 0; j < a.GetLength(1); j++)
                a[i, j] = val;
    }



    Reader reader = new Reader(Console.In);
    static void Main() { new Program().Solve(); }
}

class Reader
{
    private readonly TextReader reader;
    private readonly char[] separator = { ' ' };
    private readonly StringSplitOptions removeOp = StringSplitOptions.RemoveEmptyEntries;
    private string[] A = new string[0];
    private int i;

    public Reader(TextReader r) { reader = r; }
    public bool HasNext() { return Enqueue(); }
    public string String() { return Dequeue(); }
    public int Int() { return int.Parse(Dequeue()); }
    public long Long() { return long.Parse(Dequeue()); }
    public double Double() { return double.Parse(Dequeue()); }
    public int[] IntLine() { var s = Line(); return s == "" ? new int[0] : Array.ConvertAll(Split(s), int.Parse); }
    public int[] IntArray(int N) { return Enu.Range(0, N).Select(i => Int()).ToArray(); }
    public int[][] IntGrid(int H) { return Enu.Range(0, H).Select(i => IntLine()).ToArray(); }
    public string[] StringArray(int N) { return Enu.Range(0, N).Select(i => Line()).ToArray(); }
    public string Line() { return reader.ReadLine().Trim(); }
    private string[] Split(string s) { return s.Split(separator, removeOp); }
    private bool Enqueue()
    {
        if (i < A.Length) return true;
        string line = reader.ReadLine();
        if (line == null) return false;
        if (line == "") return Enqueue();
        A = Split(line);
        i = 0;
        return true;
    }
    private string Dequeue() { Enqueue(); return A[i++]; }
}