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#include <bits/stdc++.h>
using namespace std;
ifstream fin("dtcsu.in");
ofstream fout("dtcsu.out");
unordered_map <int, int> M;
int main()
{
int i, x, q, sol = 0;
for (i = 1; i <= 276997; i++)
{
fin >> x;
x /= (x & (-x));
M[x % 8191]++;
}
fin >> q;
for (i = 1; i <= q; i++)
{
fin >> x;
x /= (x & (-x));
sol += (M[x % 8191] != 0);
}
fout << sol << "\n";
return 0;
}