#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
using namespace std;

using ll = long long int;
using P = pair<ll,ll>;
constexpr ll INF = 1LL<<50;

int main() {
    int n;
    string s;
    cin >> n >> s;
    vector<ll> a(n+1), cnt(n+1);
    for(int i=0;i<n;i++){
        cin >> a[i+1];
        a[i+1] += a[i];
        if(s[i] == 'E') cnt[i+1]++;
        cnt[i+1] += cnt[i];
    }
    int q;
    cin >> q;
    for(int i=0;i<q;i++){
        ll k;
        cin >> k;
        int l = upper_bound(a.begin(), a.end(), k) - a.begin();
        cout << cnt[l-1] << endl;
    }
    return 0;
}