import sys
#sys.setrecursionlimit(n)
import heapq
import re
import bisect
import random
import math
import itertools
from collections import defaultdict, deque
from copy import deepcopy
from decimal import *

n = int(input())
t = [int(input()) for i in range(n)] 
m = int(input())

l = [[0xFFFF for _ in range(m + 1)] for _ in range(m + 1)]
for _ in range(m):
  a, b, c = map(int, input().split())
  l[a][b] = c
  l[b][a] = c
for k in range(n):
  for i in range(n):
    for j in range(n):
      l[i][j] = min(l[i][j], l[i][k] + l[k][j])

mn = 0xFFFF
for i in range(1, n - 1):
  for j in range(1, n - 1):
    if i != j:
      mn = min(mn, t[i] + t[j] + l[0][i] + l[i][j] + l[j][n - 1])
print(mn)