N = int(input())

S = input()

A = list(map(int,input().split()))
AS = [0]

for i in range(N):
    AS.append(AS[-1] + A[i])

AS.append(float("inf"))

SS = [0]
for i in range(N):
    if S[i] == "E":
        SS.append(SS[-1] + 1)
    else:
        SS.append(SS[-1])

Q = int(input())
K = list(map(int,input().split()))

for loop in range(Q):

    nk = K[loop]
    nans = 0

    for root in range(N):

        l = root
        r = N + 1

        while r - l != 1:

            m = (l+r) // 2
            if AS[m] - AS[root] > nk:
                r = m
            else:
                l = m

        nans = max(nans , SS[l] - SS[root] )

    print (nans)