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#include <fstream>
#include <vector>
#include <bitset>
#include <queue>
#include <algorithm>
#include <utility>
#include <cstring>
#include <string>
#include <stack>
#include <deque>
#include <iomanip>
#include <set>
#include <map>
#include <cassert>
#include <ctime>
#include <list>
#include <iomanip>
#include <tr1/unordered_map>
using namespace std;
using namespace tr1;
const int NR = 276997;
string file = "dtcsu";
ifstream cin( (file + ".in").c_str() );
ofstream cout( (file + ".out").c_str() );
char s[25];
int Q, Ans;
unordered_map <int, bool> H;
int main() {
for(int i = 1 ; i <= NR ; ++ i) {
cin.getline(s, 20);
int nr = 0;
for(int j = 0 ; s[j] ; ++ j)
nr = nr * 10 + (s[i] - '0');
H[nr] = 1;
}
cin >> Q;
for(int i = 1 ; i <= Q ; ++ i) {
int x;
cin >> x;
Ans += H[x];
}
cout << Ans << '\n';
cin.close();
cout.close();
return 0;
}