#include <bits/stdc++.h>
#ifndef ONLINE_JUDGE
    #include <debug.hpp>
#else
    #define debug(...) 42
#endif
using namespace std;
#define int long long

void solve(){
    int n;
    cin >> n;
    string s;
    cin >> s;
    vector<int> a(n);
    for (int &val : a) {
        cin >> val;
    }
    int q;
    cin >> q;
    while(q--){
        int st;
        cin >> st;
        
        int l = 0;
        int curr = 0;
        int ct = 0;
        int maxi = 0;
        
        for(int r = 0; r < n; ++r){
            curr += a[r];
            if(s[r] == 'E') ct++;
            while(curr > st){
                curr -= a[l];
                if(s[l] == 'E') ct--;
                l++;
            }
            maxi = max(maxi, ct);
        }
        cout << maxi << endl;
    }
}

int32_t main(){
    ios::sync_with_stdio(false); cin.tie(nullptr);
    int t = 1;
    // cin>>t;
    int x = 1;
    while(t--){
        debug(x);
        ++x;
        solve();
    } 
    return 0;
}