N = int(input())
S = [0] + [s == "E" for s in input()]
for i in range(1, N + 1):
    S[i] += S[i - 1]
A = [0] + list(map(int, input().split()))
for i in range(1, N + 1):
    A[i] += A[i - 1]
Q = int(input())
K = list(map(int, input().split()))

for k in K:
    l = 0
    ans = 0
    for r in range(N + 1):
        while A[r] - A[l] > k:
            l += 1
        ans = max(ans, S[r] - S[l])
    print(ans)