#include <iostream>
#include <vector>
using namespace std;
const int INF = 1000000;
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>> E(N, vector<int>(N, INF));
	for (int i = 0; i < M; i++){
		int A, B, C;
		cin >> A >> B >> C;
		E[A][B] = C;
		E[B][A] = C;
	}
	for (int i = 0; i < N; i++){
		for (int j = 0; j < N; j++){
			for (int k = 0; k < N; k++){
				E[j][k] = min(E[j][k], E[j][i] + E[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, E[0][i] + S[i] + E[i][j] + S[j] + E[j][N - 1]);
			}
		}
	}
	cout << ans << endl;
}