#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i = 0; i < (n);i++)
#define sz(x) int(x.size())
typedef long long ll;
typedef pair<int,int> P;

int main(){
  int n;
  cin >> n;
  string s;
  cin >> s;
  vector<int> a(n);
  rep(i,n) cin >> a[i];
  int Q;
  cin >> Q;
  vector<int> q(Q);
  rep(i,Q) cin >> q[i];

  vector<int> num(n+1,0);
  vector<ll> k(n+1,0);
  rep(i,n) {
    if (s[i] == 'E') num[i+1] = num[i] + 1;
    else num[i+1] = num[i];
  }
  rep(i,n) {
    k[i+1] = k[i] + a[i];
  }

  for (auto e : q) {
    auto itr = lower_bound(k.begin(), k.end(), e) - k.begin();
    if (k[itr] > e) itr--;
    cout << num[itr] << endl;
  }

  return 0;
}