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


signed main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout << fixed << setprecision(20);
    
    ll n;
    string s;
    cin>>n>>s;
    ll a[n];
    for(int i=0;i<n;i++){
        cin>>a[i];
    }
    ll q;
    cin>>q;
    while(q--){
        ll k;
        cin>>k;
        ll ans = 0;
        int r=0;
        ll sum =0;
        ll cnt=0;
        for(int i=0;i<n;i++){
            r = max(r,i);
            while(r<n && sum+a[r]<=k){
                sum += a[r];
                if(s[r]=='E') cnt++;
                r++;
            }
            ans = max(ans,cnt);
            if(s[i]=='E'){
                cnt--;
            }
            sum -= a[i];
            if(sum<0) cnt=0;
            sum = max(sum,0LL);
        }
        cout << ans << "\n";
    }

}