import sys

sys.setrecursionlimit(10**7)
def I(): return int(sys.stdin.readline().rstrip())
def MI(): return map(int,sys.stdin.readline().rstrip().split())
def LI(): return list(map(int,sys.stdin.readline().rstrip().split()))
def LI2(): return list(map(int,sys.stdin.readline().rstrip()))
def S(): return sys.stdin.readline().rstrip()
def LS(): return list(sys.stdin.readline().rstrip().split())
def LS2(): return list(sys.stdin.readline().rstrip())


N = I()
S = [I() for _ in range(N)]

inf = 10**18
dist = [[inf]*N for _ in range(N)]
M = I()
for _ in range(M):
    a,b,c = MI()
    dist[a][b] = c
    dist[b][a] = c

for k in range(N):
    for i in range(N):
        for j in range(N):
            dist[i][j] = min(dist[i][j],dist[i][k]+dist[k][j])

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

print(ans)