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())
dist = [[float("inf") for _ in range(N)] for _ in range(N)]
for i in range(N):
    dist[i][i] = 0

for i in range(M):
    x, y, z = map(int, input().split())
    dist[x][y] = z
    dist[y][x] = z

dist = warshall_floyd(dist)

cost = float("inf")
for i in range(1, N - 1):
    for j in range(1, N - 1):
        if i == j:
            continue
        cost = min(cost, dist[0][i] + dist[i][j] + dist[j][N - 1] + S[i] + S[j])

print(cost)