from itertools import accumulate

N = int(input())
S = input()
E = [int(s == "E") for s in S]
A = list(map(int, input().split()))

E = [0] + list(accumulate(E))
A = [0] + list(accumulate(A))

task = []
for l in range(N):
    for r in range(l + 1, N + 1):
        damage = A[r] - A[l]
        kill = E[r] - E[l]
        task.append((damage, ~kill))

Q = int(input())
for i, k in enumerate(map(int, input().split())):
    task.append((k, i))


task.sort()
ans = [-1] * Q

MAX = 0
for a, b in task:
    if b >= 0:
        ans[b] = MAX
    else:
        kill = ~b
        if kill > MAX:
            MAX = kill

print(*ans, sep="\n")