#include <iostream> #include <string> #include <vector> #include <algorithm> using namespace std; int arr[26]; vector<char> result; void init() { for (int & i : arr) { i = 0; } } int main() { string str1; string str2; while (getline(cin,str1)) { getline(cin,str2); init(); result.clear(); for (int i = 0; i < str1.length(); ++i) { if (arr[str1[i] - 'a'] == 0) { arr[str1[i] - 'a'] ++; } } for (int i = 0; i < str2.length(); ++i) { if (arr[str2[i] - 'a'] != 0) { result.push_back(str2[i]); arr[str2[i] - 'a'] = 0; } } sort(result.begin(),result.end()); for (char i : result) { cout << i; } cout << endl; } } |
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