func_code_string: #include <bits/stdc++.h>   using namespace std;   int a[10], b[10];   int main() {     int m, n;     cin >> m >> n;     for (int i = 0; i < m; i++) cin >> a[i];     for (int j = 0; j < n; j++) cin >> b[j];     sort(a, a + m);     sort(b, b + n);     int flag = 0, ans;     for (int i = 0, j = 0; i < m && j < n;) {       if (a[i] == b[j]) {         ans = a[i];         flag = 1;         break;       } else if (a[i] < b[j])         i++;       else if (a[i] > b[j])         j++;     }     if (flag == 1) {       cout << ans << endl;     } else {       if (a[0] == b[0])         cout << a[0] << endl;       else {         if (a[0] < b[0])           cout << a[0] * 10 + b[0] << endl;         else           cout << b[0] * 10 + a[0] << endl;       }     }   }   