func_code_string: #include <bits/stdc++.h>   using namespace std;   int n;   vector<int> x;   int ax[3];   int main() {     ax[0] = ax[1] = ax[2] = 0;     cin >> n;     for (int i = 0; i < n; ++i) {       string s;       cin >> s;       int cc = 0;       for (int i = 0; i < s.size(); ++i) cc += s[i] -  0 ;       x.push_back(cc % 3);       ax[cc % 3]++;     }     int res = ax[0] / 2 + min(ax[1], ax[2]);     cout << res;     return 0;   }   