// Source: https://usaco.guide/general/io
//who needs macros when you have usaco
#include <bits/stdc++.h>
using namespace std;
#define int long long

#define fastnuces ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);int t = 1;



void solve(){
	int n;
    cin>>n;
    string s;
    cin>>s;
    vector<int>a(n);
    for(int i=0;i<n;++i)cin>>a[i];
    int q;
    cin>>q;
    while(q--){
        int k;
        cin>>k;
        int sm=0,mx=0,l=0,cnt=0;
        for(int r=0;r<n;++r){
            sm+=a[r];

            if(s[l]=='E')cnt++;
            while(l<=r and sm>k){
                sm-=a[l];
                if(s[l]=='E')cnt--;
                l++;
            }
           
            mx=max(mx,cnt);
        }
        cout<<mx<<endl;
    }
    
}

signed main(){

    fastnuces;
   // for(int i=100;i>=1;--i)dfs(i);
    //cin>>t;

    while(t--){
        solve();
    }
}