func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n, m;     cin >> n >> m;     int s[n];     int f[10] = {0};     for (int i = 0; i < n; i++) {       cin >> s[i];     }     int tmp;     for (int j = 0; j < m; j++) {       cin >> tmp;       f[tmp] = 1;     }     int emp = 1;     for (int i = 0; i < n; i++) {       if (f[s[i]] == 1) {         emp = 0;         cout << s[i] <<    ;       }     }     if (emp == 1) cout <<   n ;   }   