#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define rep(i, n) for(int i = 0; i < (int)(n); i++)
const double PI = acos(-1);
const ll MOD = 1000000007;
using Graph = vector<vector<int>>;

int main() {
  int N; cin >> N;
  string S; cin >> S;
  vector<ll> A(N);
  rep(i,N) cin >> A[i];
  int Q; cin >> Q;
  vector<ll> K(Q);
  rep(i,Q) cin >> K[i];

  vector<int> ans(Q); 

  rep(i,Q) {
    int right = 0;
    ll sum = 0;
    int enemy = 0;
    rep(left,N) {
      while (right < N && sum + A[right] <= K[i]) {
        sum += A[right];
        if (S[right] == 'E') enemy++;
        right++;
      }

      ans[i] = max(ans[i],enemy);
      
      if (right == left) right++;
      else {
        sum -= A[left];
        if (S[left]== 'E') enemy--; 
      }
    }
  }

  rep(i,Q) cout << ans[i] << endl; 
}