#include "bits/stdc++.h"

using namespace std;

using ll = long long;
using ld = long double;

const int INF = (1 << 30) - 1;
const ll INF64 = ((ll)1 << 62) - 1;
const double PI = 3.1415926535897932384626433832795;

const int dx[] = { 0, 1, 0, -1 };
const int dy[] = { -1, 0, 1, 0 };

int main() {
	ios::sync_with_stdio(false);
	cin.tie(0);

	int n;
	cin >> n;

	vector<int> s(n);
	for (auto& v : s) {
		cin >> v;
	}

	int m;
	cin >> m;

	vector<vector<int>> g(n, vector<int>(n, 114514));
	for (int i = 0; i < n; i++) {
		g[i][i] = 0;
	}

	for (int i = 0; i < m; i++) {
		int a, b, c;
		cin >> a >> b >> c;
		g[a][b] = g[b][a] = c;
	}

	vector<vector<int>> dist = g;
	for (int k = 0; k < n; k++) {
		for (int i = 0; i < n; i++) {
			for (int j = 0; j < n; j++) {
				dist[i][j] = min(dist[i][j], dist[i][k] + dist[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, s[i] + s[j] + dist[0][i] + dist[i][j] + dist[j][n - 1]);
		}
	}

	cout << ans << endl;
	return 0;
}