#include <bits/stdc++.h>
using namespace std;
#define modulo 1000000007
#define mod(mod_x) ((((long long)mod_x+modulo))%modulo)
#define Inf 10000000



int main(){
	
	int N;
	cin>>N;
	string S;
	cin>>S;
	
	vector<long long> A(N);
	for(int i=0;i<N;i++){
		cin>>A[i];
	}
	
	int Q;
	cin>>Q;
	
	while(Q!=0){
		Q--;
		long long K;
		cin>>K;
		int l = 0;
		int r = 0;
		int e_cnt = 0;
		long long sum = 0;
		int ans = 0;
		while(true){
			if(r==N)break;
			while(sum+A[r]>K){
				sum-=A[l];
				if(S[l]=='E')e_cnt--;
				l++;
			}
			sum += A[r];
			if(S[r]=='E')e_cnt++;
			r++;
			ans = max(ans,e_cnt);
		}
		cout<<ans<<endl;
	}
	
	return 0;
}