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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>
using namespace std;
string file = "dtcsu";
ifstream cin( (file + ".in").c_str() );
ofstream cout( (file + ".out").c_str() );
const int MAXN = 100005;
const int oo = (1<<31)-1;
typedef vector<int> Graph[MAXN];
typedef vector<int> :: iterator It;
const inline int min(const int &a, const int &b) { if( a > b ) return b; return a; }
const inline int max(const int &a, const int &b) { if( a < b ) return b; return a; }
const inline void Get_min(int &a, const int b) { if( a > b ) a = b; }
const inline void Get_max(int &a, const int b) { if( a < b ) a = b; }
struct ClassComp {
inline bool operator () (const int &a, const int &b) const {
return a > b;
}
};
int N, Q, Ans;
char s[276999][25];
inline void read() {
for(int i = 1 ; i <= 276997 ; ++ i) {
cin.getline(s[i], 20);
}
}
inline bool find(int value) {
for(int i = 1 ; i <= 276997 ; ++ i) {
int nr = 0;
for(int j = 0 ; s[i][j] ; ++ j)
nr = nr * 10 + (s[i][j] - '0');
if(nr == value)
return 1;
}
return 0;
}
int main() {
read();
cin >> Q;
for(int i = 1 ; i <= Q ; ++ i) {
int x;
cin >> x;
Ans += find(x);
}
cout << Ans << '\n';
cin.close();
cout.close();
return 0;
}