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

int main(void) {
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	
	int N;
	cin >> N;
	vector<int> S(N);
	for(int i = 0; i < N; ++i) cin >> S[i];
	
	vector G(N, vector<int>(N, 5e8));
	int M;
	cin >> M;
	for(int i = 0; i < M; ++i) {
		int A, B, C;
		cin >> A >> B >> C;
		G[A][B] = 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) if(G[i][k] + G[k][j] < G[i][j]) G[i][j] = G[i][k] + G[k][j];
	
	int ans = 2e9;
	for(int t1 = 1; t1 < N - 1; ++t1) for(int t2 = 1; t2 < N - 1; ++t2) if(t1 != t2) {
		int cost = G[0][t1] + G[t1][t2] + G[t2][N - 1] + S[t1] + S[t2];
		if(cost < ans) ans = cost;
	}
	cout << ans << endl;
	return 0;
}