#define _USE_MATH_DEFINES
#include <algorithm>
#include <cstdio>
#include <functional>
#include <iostream>
#include <cfloat>
#include <climits>
#include <cstring>
#include <cmath>
#include <map>
#include <queue>
#include <random>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <time.h>
#include <vector>
using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef pair<int, int> i_i;
typedef pair<int, ll> i_ll;
typedef pair<ll, int> ll_i;
typedef pair<double, int> d_i;
typedef pair<ll, ll> ll_ll;
typedef pair<double, double> d_d;
struct edge { int u, v; ll w; };

ll MOD = 1000000007;
ll _MOD = 1000000009;
double EPS = 1e-10;

int main() {
	int N; cin >> N;
	vector<int> S(N);
	for (int i = 0; i < N; i++)
		cin >> S[i];
	vector< vector<int> > d(N, vector<int>(N, INT_MAX / 100));
	for (int i = 0; i < N; i++)
		d[i][i] = 0;
	int M; cin >> M;
	while (M--) {
		int A, B, C; cin >> A >> B >> C;
		d[A][B] = d[B][A] = C;
	}
	for (int k = 0; k < N; k++)
		for (int i = 0; i < N; i++)
			for (int j = 0; j < N; j++)
				d[i][j] = min(d[i][j], d[i][k] + d[k][j]);
	int mini = INT_MAX;
	for (int i = 1; i < N - 1; i++)
		for (int j = 1; j < N - 1; j++) {
			if (i == j) continue;
			mini = min(mini, d[0][i] + S[i] + d[i][j] + S[j] + d[j][N - 1]);
		}
	cout << mini << endl;
}