func_code_string: #include <bits/stdc++.h>   using namespace std;   void solve() {     int n;     cin >> n;     int count[2] = {0, 0};     bool all_even = 1;     for (int i = 0; i < n; i++) {       static string s;       cin >> s;       if (static_cast<int>(s.size()) & 1) all_even = 0;       for (const char &c : s) count[c -  0 ]++;     }     if (all_even && (count[0] & 1) && (count[1] & 1))       cout << n - 1;     else       cout << n;     cout <<   n ;   }   int main() {     ios_base::sync_with_stdio(0), cin.tie(0);     int t = 1;     cin >> t;     while (t--) solve();     return 0;   }   