func_code_string: #include <bits/stdc++.h>   using namespace std;   void JaiMataDi() {     int n;     cin >> n;     string a, b;     cin >> a >> b;     int cnt = 0;     for (int i = 0; i < n; i++) {       if ((a[i] ==  0 ) and (b[i] ==  1 ))         cnt += 2;       else if ((a[i] ==  1 ) and (b[i] ==  0 ))         cnt += 2;       else if ((a[i] ==  0 ) and (b[i] ==  0 )) {         if (i + 1 < n) {           if ((a[i + 1] ==  1 ) and (b[i + 1] ==  1 ))             cnt += 2, i++;           else             cnt += 1;         } else           cnt += 1;       } else if ((a[i] ==  1 ) and (b[i] ==  1 )) {         if (i + 1 < n) {           if ((a[i + 1] ==  0 ) and (b[i + 1] ==  0 )) cnt += 2, i++;         }       }     }     cout << cnt <<   n ;   }   int main() {     int t;     cin >> t;     while (t--) JaiMataDi();   }   