#include "bits/stdc++.h"
#define REP(i, n) for(int i = 0; i < int(n); i++)
#define FOR(i,n,m) for(int i = int(n); i < int(m); i++)
using namespace std;
typedef long long ll;
const int MOD = 1e9 + 7;
const int INF = 1e9 + 6;
const ll LLINF = 1e18 + 1;



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