func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long long t;     cin >> t;     while (t--) {       long long n, f = 0;       cin >> n;       vector<char> v1, v2;       for (int i = 0; i < n; i++) {         char a;         cin >> a;         v1.push_back(a);       }       for (int i = 0; i < n; i++) {         char b;         cin >> b;         v2.push_back(b);       }       for (int i = 0; i < n; i++) {         if (v1[i] ==  1  && v2[i] ==  1 ) {           f = 1;           break;         }       }       if (f == 1) {         cout <<  No  << endl;       } else {         cout <<  Yes  << endl;       }     }     return 0;   }   