This documentation is automatically generated by online-judge-tools/verification-helper
#define PROBLEM "https://onlinejudge.u-aizu.ac.jp/courses/lesson/1/ALDS1/4/ALDS1_4_B"
#include <algorithm>
#include <iostream>
#include <vector>
#define REP(i, n) for(int i = 0; (i) < (int)(n); ++(i))
#define ALL(x) std::begin(x), std::end(x)
using namespace std;
int main() {
int n;
cin >> n;
vector<int> s(n);
REP(i, n) { cin >> s[i]; }
int q;
cin >> q;
int cnt = 0;
while(q--) {
int t_i;
cin >> t_i;
cnt += binary_search(ALL(s), t_i);
}
cout << cnt << endl;
return 0;
}
#line 1 "verify/example.test.cpp"
#define PROBLEM "https://onlinejudge.u-aizu.ac.jp/courses/lesson/1/ALDS1/4/ALDS1_4_B"
#include <algorithm>
#include <iostream>
#include <vector>
#define REP(i, n) for(int i = 0; (i) < (int)(n); ++(i))
#define ALL(x) std::begin(x), std::end(x)
using namespace std;
int main() {
int n;
cin >> n;
vector<int> s(n);
REP(i, n) { cin >> s[i]; }
int q;
cin >> q;
int cnt = 0;
while(q--) {
int t_i;
cin >> t_i;
cnt += binary_search(ALL(s), t_i);
}
cout << cnt << endl;
return 0;
}