# include <iostream> # include <string> # include <vector> # include <algorithm> # include <unordered_map> # include <utility> using namespace std; int main(){ string s; while(cin>>s){ unordered_map<char, int> mp; for(auto ch:s){ mp[ch]++; } vector<pair<char,int>> vec; for(auto &it:mp){ vec.push_back(it); } sort(vec.begin(),vec.end(),[](pair<char,int> a,pair<char,int> b){return a.second<b.second;}); int min_num = vec[0].second; string new_ans; for(int i = 0; i<s.size(); i++ ){ if(mp[s[i]]!= min_num){ new_ans.push_back(s[i]); } } cout<<new_ans<<endl; } }