func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios_base::sync_with_stdio(0);     cin.tie(0);     int t;     cin >> t;     for (; t; t--) {       int n;       cin >> n;       vector<int> a(n);       for (int i = 0; i < n; i++) cin >> a[i];       vector<int> gist(3);       for (int i = 0; i < n; i++) gist[a[i] % 3]++;       while (gist[1] > 0 && gist[2] > 0) {         gist[1]--;         gist[2]--;         gist[0]++;       }       while (gist[1] - 3 >= 0) {         gist[1] -= 3;         gist[0]++;       }       while (gist[2] - 3 >= 0) {         gist[2] -= 3;         gist[0]++;       }       cout << gist[0] <<   n ;     }     return 0;   }   