from itertools import permutations
import sys
input = sys.stdin.readline

def warshall_floyd(d):
    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

N = int(input())
S = [int(input()) for _ in range(N)]
M = int(input())
d = [[10**18 for _ in range(N)] for _ in range(N)]

for _ in range(M):
    Ai, Bi, Ci = map(int, input().split())
    d[Ai][Bi] = Ci
    d[Bi][Ai] = Ci

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

ans = 10 ** 18
d = warshall_floyd(d)

for t1, t2 in permutations(range(1, N-1), 2):
    ans = min(ans, d[0][t1]+S[t1]+d[t1][t2]+S[t2]+d[t2][N-1])

print(ans)