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

int n, m;
int s[50], g[50][50];

int main() {
	int n;
	cin >> n;
	for (int i = 0; i < 50; i++) {
		for (int j = 0; j < 50; j++) {
			g[i][j] = 1e8;
		}
		g[i][i] = 0;
	}
	for (int i = 0; i < n; i++) cin >> s[i];
	cin >> m;
	for (int i = 0; i < m; i++) {
		int a, b, c;
		cin >> a >> b >> c;
		g[a][b] = c;
		g[b][a] = c;
	}
	for (int k = 0; k < n; k++) {
		for (int i = 0; i < n; i++) {
			for (int j = 0; j < n; j++) {
				g[i][j] = min(g[i][j], g[i][k] + g[k][j]);
			}
		}
	}
	int ans = 1e9;
	for (int i = 1; i < n - 1; i++) {
		for (int j = 1; j < n - 1; j++) {
			if (i != j) {
				ans = min(ans, g[0][i] + s[i] + g[i][j] + s[j] + g[j][n - 1]);
			}
		}
	}
	cout << ans << endl;
}