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#include <bits/stdc++.h>
#define P 8887
using namespace std;
ifstream fin("dtcsu.in");
ofstream fout("dtcsu.out");
vector <long long> h[P];
int q;
int main()
{
int i, cnt;
long long x;
for(i = 1; i <= 276997; i++)
{
fin >> x;
x /= (x & -x);
h[x % P].push_back(x);
}
cnt = 0;
fin >> q;
for(i = 1; i <= q; i++)
{
fin >> x;
if(x > 0)
{
x /= (x & -x);
for(long long y : h[x % P])
if(y == x) cnt++;
}
}
fout << cnt << '\n';
return 0;
}