#include <bits/stdc++.h>
using namespace std;

template<typename T> int SumDigit(T N) {
	int res = 0;
	while(N > 0) { res += (N % 10); N /= 10; }
	return res;
}

int main(){
    int N, Q;
    string S;
    cin >> N >> S;
    vector<long long> HP(N);
    vector<long long> sum(N+1, 0);
    vector<int> ene(N+1, 0);
    for (int i = 0; i < N; i++) {
        cin >> HP[i];
        sum[i+1] = sum[i] + HP[i];
        ene[i+1] = ene[i];
        if (S[i] == 'E') ene[i+1]++;
    }

    cin >> Q;
    for (int i = 0; i < Q; i++) {
        long long K; cin >> K;
        if (sum[N] <= K) {
            cout << ene[N] << endl;
            continue;
        }
        int M = lower_bound(sum.begin(), sum.end(), K) - sum.begin();
        int ans = ene[M];
        if (K < sum[M] && S[M] == 'E') ans = max(0, ene[M]-1);
        cout << ans << endl;
    }
}