#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define all(vec) vec.begin(),vec.end()
#define MOD 1000000007
#define int long long

signed main(){
    string s;
    int n;cin>>n>>s;
    int a[n+1];
    int w[n+1];
    w[0]=0;
    rep(i,n){
        w[i+1]=w[i]+(s[i]=='E');
    }
    a[0]=0;
    rep(i,n){
        int r;cin>>r;
        a[i+1]=a[i]+r;
    }
    int q;cin>>q;
    rep(i,q){
        int k;
        cin>>k;
        int ans=0;
        rep(ii,n){
            int j=ii;
            while(a[j]<=k+a[ii]&&j<n)j++;
            int it=j-1;
            ans=max(ans,w[it]-w[ii]);
        }
        cout<<ans<<endl;
    }
}