#include <bits/stdc++.h>   using namespace std;   int main() {     int n, m;     cin >> n >> m;     vector<int> v(n), v1(m);     for (int i = 0; i < n; ++i) {       cin >> v[i];     }     for (int i = 0; i < m; ++i) {       cin >> v1[i];     }     vector<int> ans;     for (int i = 0; i < n; ++i) {       for (int j = 0; j < m; ++j) {         if (v[i] == v1[j]) {           ans.push_back(v[i]);           break;         }       }     }     for (auto i : ans) {       cout << i <<    ;     }   }   