from itertools import accumulate
N = int(input())
S = list(str(input()))
A = list(map(int,input().split()))
Q = int(input())
K = list(map(int,input().split()))
sumA = [0]+list(accumulate(A))
E = [0]
for s in S:
    if s == 'E':
        E.append(1)
    else:
        E.append(0)
sumE = list(accumulate(E))
j = 0
for k in K:
    ans = 0
    for i in range(N+1):
        j = 0
        while j < N+1 and sumA[j]-sumA[i] <= k:
            ans = max(ans,sumE[j]-sumE[i])
            j += 1
    print(ans)