func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long long m, n, i, t, j;     cin >> t;     while (t--) {       long long one = 0, zro = 0, cnt = 0, ans = 0;       cin >> n;       vector<long long> v;       for (long long j = 0; j < n; j++) {         string s;         cin >> s;         for (long long i = 0; i < s.size(); i++) {           if (s[i] ==  1 )             one++;           else             zro++;         }         v.push_back(s.size());       }       sort(v.begin(), v.end());       long long pr = one / 2 + zro / 2;       for (long long i = 0; i < v.size(); i++) {         long long need = v[i] / 2;         if (need <= pr) pr -= need, ans++;       }       cout << ans << endl;     }   }   