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

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n, v, Q;
    string s;
    cin >> n >> s;
    vector<int> ss(n + 1);
    vector<ll> as(n + 1);
    for(int i = 0; i < n; i++){
        cin >> v;
        ss[i + 1] = ss[i] + (s[i] == 'E');
        as[i + 1] = as[i] + v;
    }
    cin >> Q;
    while(Q--){
        cin >> v;
        int ans = 0;
        for(int l = 0, r = 0; l < n; l++){
            while(r <= n && as[r] <= as[l] + v) ans = max(ans, ss[r++] - ss[l]);
        }
        cout << ans << '\n';
    }
}