10391

#include<iostream>#include<vector>#include<string>#include<type_traits>#include<sstream>#include<tuple>#include<bitset>#include<regex>#include<set>#include<queue>#include<map>using namespace std;int main(){set<string> data;string s;while (cin >> s){data.insert(s);}for (auto it : data){for (int i = 1; i < it.size(); i++){string a = it.substr(0,i);string b = it.substr(i,it.size()-i);if (data.find(a) != data.end() && data.find(b) != data.end()){cout << it << endl;break;}}}//system("pause");return 0;}