import sys

input = sys.stdin.readline


def main():
    N = int(input())
    S = [int(input()) for i in range(N)]
    M = int(input())

    D = [[float('inf')]*N for i in range(N)]
    for i in range(N):
        D[i][i] = 0
    for i in range(M):
        A, B, C = map(int, input().split())
        D[A][B] = D[B][A] = C

    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])

    ans = float('inf')
    for i in range(1, N-1):
        for j in range(1, N-1):
            if i != j:
                ans = min(ans, D[0][i] + D[i][j] + D[j][N-1] + S[i] + S[j])

    print(ans)


if __name__ == '__main__':
    main()