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

int main() {
  ios::sync_with_stdio(false);

  int N;
  cin >> N;

  string S;
  cin >> S;

  vector<int> A(N);
  for (int i = 0; i < N; ++i) {
    cin >> A[i];
  }

  int Q;
  cin >> Q;

  vector<int> K(Q);
  for (int i = 0; i < Q; ++i) {
    cin >> K[i];
  }

  vector<int> pe(N + 1);
  vector<int64_t> pc(N + 1);
  for (int i = 0; i < N; ++i) {
    pe[i + 1] = pe[i] + (S[i] == 'E');
    pc[i + 1] = pc[i] + A[i];
  }

  for (int k : K) {
    int ans = 0;
    for (int i = 0; i < N; ++i) {
      int lb = i;
      int ub = N + 1;
      while (ub - lb > 1) {
        int mb = lb + ub >> 1;
        (pc[mb] - pc[i] <= k ? lb : ub) = mb;
      }
      ans = max(ans, pe[lb] - pe[i]);
    }
    cout << ans << endl;
  }

  return 0;
}