#include <bits/stdc++.h>   using namespace std;   int main() {     int n, m;     cin >> n >> m;     int a[n], b[m];     for (int i = 0; i < n; i++) cin >> a[i];     for (int i = 0; i < m; i++) cin >> b[i];     int c[n];     for (int i = 0; i < n; i++) {       int check = a[i];       int j = 0;       for (; j < m; j++)         if (b[j] == check) {           c[i] = 1;           break;         }       if (j == m) c[i] = 0;     }     for (int i = 0; i < n; i++)       if (c[i] == 1) cout << a[i] <<    ;     return 0;   }   