#ifdef ONPC
#define _GLIBCXX_DEBUG
#endif
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef vector<int> vi;
typedef vector<vector<int>> vvi;
typedef vector<pair<int,int>> vpi;
typedef pair<int,int> pi;
#define F first
#define S second
#define PB push_back
#define MP make_pair
#define popcount __builtin_popcountll
#define forn(i,a,b) for (int i = a; i < b; i++)

void solve(){
    // cout<<"runs\n";
    int n;cin>>n;
    vi pref(n+1);
    vi pref2(n+1);
    string s;cin>>s;
    forn(i,1,n+1){
        pref[i]=pref[i-1];
        if(s[i-1]=='E')pref[i]++;
    }
    vi end(n);
    forn(i,1,n+1){ 
        cin>>end[i-1];
        pref2[i]=pref2[i-1]+end[i-1];
    }
    // cout<<n<<"\n";
    // cout<<s<<"\n";
    // forn(i,0,n+1){
    //     cout<<pref[i]<<" ";
    // }
    // cout<<"\n";
    // forn(i,0,n+1){
    //     cout<<pref2[i]<<" ";
    // }

    int q;cin>>q;
    forn(i,0,q){
        int x;cin>>x;
        auto it=upper_bound(pref2.begin(),pref2.end(),x);
        int y=it-pref2.begin()-1;
        // cout<<y<<" ";
        cout<<pref[y]<<"\n";
    }
}

signed main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    int t=1;
    // cin >> t;
    forn(i,0,t){
        solve();
    }
    #ifdef ONPC
    cerr << endl
         << "finished in " << clock() * 1.0 / CLOCKS_PER_SEC << " sec" << endl;
    #endif
}