#include <bits/stdc++.h>   using namespace std;   int main() {     ios_base::sync_with_stdio(false);     long long int t, temp, i, ans = 0, n, m, index, j;     cin >> n >> m;     vector<pair<long long int, long long int> > pa;     vector<long long int> v(n), finger(m);     for (i = 0; i < n; i++) {       cin >> v[i];     }     for (i = 0; i < m; i++) {       cin >> finger[i];       for (j = 0; j < n; j++) {         if (v[j] == finger[i]) {           pa.push_back(make_pair(j, finger[i]));         }       }     }     sort(pa.begin(), pa.end());     if (pa.size() == 0)       cout <<   n ;     else {       for (auto it = pa.begin(); it != pa.end(); it++) {         cout << it->second <<    ;       }     }   }   