#include <cstdio>
#include <cstring>
#include <unordered_set>
using namespace std;

unordered_set<long long> hashtable;
char nr[19];

int main() {
  freopen("dtcsu.in", "r", stdin);
  for (int i = 0; i < 276997; ++i) {
    fgets(nr, 19, stdin);

    long long n = 0;
    int size = strlen(nr);
    for (int j = 0; i < size; ++i) {
      n = n*10 + nr[i];
    }

    hashtable.insert(n);
  }

  int Q, rez = 0;
  scanf("%d", &Q);
  fgets(nr, 1, stdin);

  for (int i = 0; i < Q; ++i) {
    fgets(nr, 19, stdin);
    long long n = 0;
    int size = strlen(nr);
    for (int j = 0; j < size; ++j) {
      n = n*10 + nr[i];
    }

    rez += (hashtable.find(n) != hashtable.end());
  }

  freopen("dtcsu.out", "w", stdout);
  printf("%d", rez);
  return 0;
}