func_code_string: #include <bits/stdc++.h>   using namespace std;   void solve() {     long long int n;     cin >> n;     long long int a, c1 = 0, c2 = 0, c3 = 0;     vector<long long int> v1;     vector<long long int> v2;     vector<long long int> v3;     for (int i = 1; i <= n; i++) {       cin >> a;       if (a == 0) {         v3.push_back(a);       } else if (a > 0) {         v2.push_back(a);       } else {         v1.push_back(a);       }     }     if (v2.size() == 0) {       for (int i = 0; i < 2; i++) {         v2.push_back(v1.back());         v1.pop_back();       }     }     if (v1.size() % 2 == 0) {       v3.push_back(v1.back());       v1.pop_back();     }     cout << v1.size() <<    ;     for (int i = 0; i < v1.size(); i++) cout << v1[i] <<    ;     cout << endl;     cout << v2.size() <<    ;     for (int i = 0; i < v2.size(); i++) cout << v2[i] <<    ;     cout << endl;     cout << v3.size() <<    ;     for (int i = 0; i < v3.size(); i++) cout << v3[i] <<    ;     cout << endl;   }   int main() {     solve();     return 0;   }   