func_code_string: #include <bits/stdc++.h>   using namespace std;   const int maxn = 16;   signed main() {     ios_base::sync_with_stdio(false);     cin.tie(0);     vector<int> ans(maxn, -1);     ans[0] = 0;     for (int i = 1; i < maxn; ++i) {       for (auto j : vector<int>{4, 6, 9}) {         if (i >= j && ans[i - j] != -1) {           ans[i] = max(ans[i], ans[i - j] + 1);         }       }     }     int q;     cin >> q;     for (int i = 0; i < q; ++i) {       int n;       cin >> n;       if (n < maxn) {         cout << ans[n] <<   n ;       } else {         int t = (n - maxn) / 4 + 1;         cout << t + ans[n - 4 * t] <<   n ;       }     }   }   