def WarshallFloyd(N, Cost):
    for k in range(N):
        for i in range(N):
            for j in range(N):
                if Cost[i][k] + Cost[k][j] < Cost[i][j]:
                    Cost[i][j] = Cost[i][k] + Cost[k][j]
    return Cost

INF = 1<<64
N = int(input())
S = list(int(input()) for _ in range(N))
M = int(input())
Cost = [[INF] * N for _ in range(N)]
for i in range(N):
    Cost[i][i] = 0
for _ in range(M):
    A,B,C = map(int,input().split())
    Cost[A][B] = C
    Cost[B][A] = C
Cost = WarshallFloyd(N, Cost)
ans = INF
for i in range(1,N-1):
    for j in range(1,N-1):
        if i != j:
            C = Cost[0][i] + Cost[i][j] + Cost[j][N-1] + S[i] + S[j]
            ans = min(ans, C)
print(ans)