n = int(input())
s = str(input())
A = list(map(int, input().split()))
q = int(input())
K = list(map(int, input().split()))

B = [0]*n
for i in range(n):
    if s[i] == 'E':
        B[i] = 1

from itertools import accumulate
C = [0]+B
C = list(accumulate(C))

for i in range(q):
    x = 0
    y = 0
    S = 0
    ans = -1
    for x in range(n):
        while y < n and S <= K[i]:
            S += A[y]
            y += 1
        if S <= K[i]:
            ans = max(ans, C[y]-C[x])
        else:
            ans = max(ans, C[y-1]-C[x])
        if x == y:
            y += 1
        else:
            S -= A[x]
    print(ans)