func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios::sync_with_stdio(false);     long long T;     cin >> T;     while (T--) {       long long n;       cin >> n;       long long ans = 0;       long long one = 0, two = 0;       for (int i = 1; i <= n; i++) {         long long x;         cin >> x;         x %= 3;         if (x == 0) ans++;         if (x == 1) one++;         if (x == 2) two++;       }       if (one >= two) {         ans += two;         ans += (one - two) / 3;       } else {         ans += one;         ans += (two - one) / 3;       }       cout << ans <<   n ;     }     return 0;   }   