import sys; input = sys.stdin.buffer.readline
sys.setrecursionlimit(10**7)
from collections import defaultdict
con = 10 ** 9 + 7; INF = float("inf")

def getlist():
	return list(map(int, input().split()))

def warshall_floyd(d, N):
	for k in range(N):
		for i in range(N):
			for j in range(N):
				d[i][j] = min(d[i][j],d[i][k] + d[k][j])
	return d

#処理内容
def main():
	N = int(input())
	S = []
	for i in range(N):
		s = int(input())
		S.append(s)

	M = int(input())
	d = [[INF for i in range(N)] for j in range(N)]
	for i in range(M):
		a, b, w = getlist()
		d[a][b] = w; d[b][a] = w

	for i in range(N):
		d[i][i] = 0

	#wf
	d = warshall_floyd(d, N)

	ans = INF
	for i in range(1, N - 1):
		for j in range(1, N - 1):
			if i != j:
				val = d[0][i] + d[i][j] + d[j][N - 1] + S[i] + S[j]
				# print(i, j, val)
				ans = min(ans, val)

	print(ans)

if __name__ == '__main__':
	main()