import sys
input = sys.stdin.readline

N=int(input())
S=input().strip()
A=list(map(int,input().split()))
Q=int(input())
K=list(map(int,input().split()))

SU=[0]
for a in A:
    SU.append(SU[-1]+a)

SU2=[0]
for s in S:
    if s=="E":
        SU2.append(SU2[-1]+1)
    else:
        SU2.append(SU2[-1])

for k in K:
    ANS=0
    ind=0

    for start in range(N):
        while ind<len(SU) and SU[ind]-SU[start]<=k:
            ind+=1
        ANS=max(ANS,SU2[ind-1]-SU2[start])

        #print(start,ind)

    print(ANS)