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

#define INF 100000000

int main() {
	int n;
	cin >> n;
	vector<int> s(n);
	for (int i = 0;i < n;i++) {
		cin >> s[i];
	}
	int m;
	cin >> m;
	vector<vector<int>> dp(n, vector<int>(n, INF));
	for (int i = 0;i < n;i++) {
		dp[i][i] = 0;
	}
	for (int i = 0;i < m;i++) {
		int a, b, c;
		cin >> a >> b >> c;
		dp[a][b] = c;
		dp[b][a] = c;
	}

	for (int i = 0;i < n;i++) {
		for (int j = 0;j < n;j++) {
			for (int k = 0;k < n;k++) {
				dp[j][k] = min(dp[j][k], dp[j][i] + dp[i][k]);
			}
		}
	}

	int ans = INF;
	for (int i = 1;i < n - 1;i++) {
		for (int j = 1;j < n - 1;j++) {
			if (i != j) {
				ans = min(ans, dp[0][i] + dp[i][j] + dp[j][n - 1] + s[i] + s[j]);
			}
		}
	}
	cout << ans << endl;

	return 0;
}