func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int t;     cin >> t;     while (t--) {       int n;       cin >> n;       int count = 0, wc = 0;       bool flag = 0;       int m = n;       while (n--) {         string s;         cin >> s;         int l = s.size();         if (l % 2 == 1) flag = 1;         int zeroc = 0, onec = 0;         for (int i = 0; i < l; i++) {           if (s[i] ==  0 ) {             zeroc++;           } else {             onec++;           }         }         if (onec % 2 == 1 && zeroc % 2 == 1) {           wc++;         } else {           count++;         }       }       if (flag == 1)         cout << m << endl;       else {         count = count + 2 * (wc / 2);         cout << count << endl;       }     }     return 0;   }   