#include <bits/stdc++.h>
#define P 8191
using namespace std;
/**

*/

vector<long long> h[P];

void Adauga(long long x)
{
    int r=x%P;
    h[r].push_back(x);
}

int Cauta(long long x)
{
    int r=x%P;
    for(long long e:h[r])
        if(e==x)return 1;
    return 0;
}

ifstream fin("dtcsu.in");
ofstream fout("dtcsu.out");
int main()
{
    int i,Q,cnt=0;
    long long x;
    for(i=1;i<=276997;i++)
    {
        fin>>x;
        while(x%2==0)x/=2;
        if(Cauta(x)==0)Adauga(x);
    }
    fin>>Q;
    for(i=1;i<=Q;i++)
    {
        fin>>x;
        while(x%2==0)x/=2;
        cnt+=Cauta(x);
    }
    fout<<cnt<<"\n";
    fout.close();
    return 0;
}