func_code_string: #include <bits/stdc++.h>   using namespace std;   template <class T>   inline int SIZE(T& n) {     return n.size();   }   template <class T>   void OUT(const T& n) {     for (unsigned int i = 0; i < n.size(); ++i) {       cout << n[i] <<    ;     }     cout << endl;   }   int toInt(string s) {     int r = 0;     stringstream sin(s);     sin >> r;     return r;   }   template <class T>   string toString(T n) {     ostringstream ost;     ost << n;     ost.flush();     return ost.str();   }   class PacifistFrogs {    public:     vector<int> frogs(int N, vector<int> frogs, vector<int> mosquitoes) {       int number = 0, res = 1234567890;       vector<pair<int, int> > ans;       vector<int> output;       for (int i = 0; i < frogs.size(); ++i) {         int number = 0;         for (int j = 0; j < mosquitoes.size(); ++j) {           if (mosquitoes[j] % frogs[i] == 0) {             number++;           }         }         ans.push_back(make_pair(number, i + 1));         res = min(res, number);       }       for (int i = 0; i < ans.size(); ++i) {         if (ans[i].first == res) output.push_back(ans[i].second);       }       return output;     }   };   int n, m, k, a;   int main() {     cin >> n >> m >> k;     vector<int> frogs, mosquitoes, res;     for (int i = 0; i < m; ++i) {       cin >> a;       frogs.push_back(a);     }     for (int i = 0; i < k; ++i) {       cin >> a;       mosquitoes.push_back(a);     }     PacifistFrogs FROG;     res = FROG.frogs(n, frogs, mosquitoes);     cout << res.size() << endl;     OUT(res);     return 0;   }   