#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
using namespace std;

//template
#define rep(i,a,b) for(int i=(a);i<(b);i++)
#define rrep(i,a,b) for(int i=(a);i>(b);i--)
#define ALL(v) (v).begin(),(v).end()
typedef long long int ll; const int inf = 0x3fffffff; const ll INF = 0x3fffffffffffffff;
template<class T> inline bool chmax(T& a,T b){ if(a<b){a=b;return 1;}return 0; }
template<class T> inline bool chmin(T& a,T b){ if(a>b){a=b;return 1;}return 0; }
//template end



int main(){
    int n; scanf("%d",&n);
    string s; cin>>s;
    vector<ll> a(n+10,0),w(n+10,0);
    rep(i,0,n)w[i+1]=w[i]+(s[i]=='E');
    rep(i,0,n){
        int tmp; scanf("%d",&tmp);
        a[i+1]=a[i]+tmp;
    }
    int q; scanf("%d",&q);
    rep(rot,0,q){
        int tmp; scanf("%d",&tmp);
        ll ans=0; int idx=0;
        rep(i,0,n){
            while(a[idx]<=a[i]+tmp&&idx<=n)idx++;
            chmax(ans,w[idx-1]-w[i]);
        }
        printf("%lld\n",ans);
    }
    return 0;
}