func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n, m, cnt11 = 0, cnt12 = 0, cnt13 = 0, cnt14 = 0, cnt15 = 0, cnt16 = 0,               cnt17 = 0, cnt18 = 0, cnt19 = 0;     int cnt21 = 0, cnt22 = 0, cnt23 = 0, cnt24 = 0, cnt25 = 0, cnt26 = 0,         cnt27 = 0, cnt28 = 0, cnt29 = 0;     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];     }     sort(a, a + n);     sort(b, b + m);     for (int i = 0; i < n; i++) {       if (a[i] == 1) {         cnt11++;       }       if (a[i] == 2) {         cnt12++;       }       if (a[i] == 3) {         cnt13++;       }       if (a[i] == 4) {         cnt14++;       }       if (a[i] == 5) {         cnt15++;       }       if (a[i] == 6) {         cnt16++;       }       if (a[i] == 7) {         cnt17++;       }       if (a[i] == 8) {         cnt18++;       }       if (a[i] == 9) {         cnt19++;       }     }     for (int i = 0; i < m; i++) {       if (b[i] == 1) {         cnt21++;       }       if (b[i] == 2) {         cnt22++;       }       if (b[i] == 3) {         cnt23++;       }       if (b[i] == 4) {         cnt24++;       }       if (b[i] == 5) {         cnt25++;       }       if (b[i] == 6) {         cnt26++;       }       if (b[i] == 7) {         cnt27++;       }       if (b[i] == 8) {         cnt28++;       }       if (b[i] == 9) {         cnt29++;       }     }     if (cnt11 > 0 && cnt21 > 0) {       cout <<  1  << endl;     } else if (cnt12 > 0 && cnt22 > 0) {       cout <<  2  << endl;     } else if (cnt13 > 0 && cnt23 > 0) {       cout <<  3  << endl;     } else if (cnt14 > 0 && cnt24 > 0) {       cout <<  4  << endl;     } else if (cnt15 > 0 && cnt25 > 0) {       cout <<  5  << endl;     } else if (cnt16 > 0 && cnt26 > 0) {       cout <<  6  << endl;     } else if (cnt17 > 0 && cnt27 > 0) {       cout <<  7  << endl;     } else if (cnt18 > 0 && cnt28 > 0) {       cout <<  8  << endl;     } else if (cnt19 > 0 && cnt29 > 0) {       cout <<  9  << endl;     } else {       if (a[0] == b[0]) {         cout << a[0] << endl;       }       if (a[0] > b[0]) {         cout << b[0] << a[0] << endl;       }       if (a[0] < b[0]) {         cout << a[0] << b[0] << endl;       }     }     return 0;   }   