import itertools
import numpy as np
from scipy.sparse.csgraph import floyd_warshall
from scipy.sparse import csr_matrix

N = int(input())
S = tuple(int(input()) for _ in range(N))
M = int(input())
X = np.array([tuple(map(int, input().split())) for _ in range(M)]).T

matr = csr_matrix((X[2], (X[0], X[1])), shape=(N, N))
way = floyd_warshall(matr, directed=False).astype(int)
way[way < 0] = 10 ** 9

ans = float('inf')
for i, j in itertools.permutations(range(1, N - 1), 2):
    ans = min(ans, way[0][i] + way[i][j] + way[j][N - 1] + S[i] + S[j])
print(ans)