#include<iostream>
#include<algorithm>
using namespace std;

int d[50][50];
int rest[50];
const int INF = 1e9;
int main(void){
	int N,M, res = INF;
	cin >> N;
	for (int i = 0; i < N; i++)
	{
		cin >> rest[i];
		for (int j = 0; j < N; j++)
		{
			if (i != j)d[i][j] = INF;
		}
	}
	cin >> M;
	for (int i = 0; i < M; i++)
	{
		int x, y, c;
		cin >> x >> y >> c;
		d[x][y] = d[y][x] = 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]);
	for (int i = 1; i < N-1; i++)
		for (int j = 1; j < N-1; j++)
			if (i != j){ 
				res = min(res, rest[i] + rest[j] + d[0][i] + d[i][j] + d[j][N - 1]);
			}
	cout << res << endl;
	return 0;
}