#include<iostream>#include<vector>#include<map>#include<string>#include<cstring>#include<cstdio>#include<algorithm>usingnamespace std;int hashtable[128], isout[128];intmain(){
string input;int k;
cin >> k >> input;for(int i =0; i < input.size();){int flag =1, cnt =1;for(int j = i +1; j < input.size()&&input[j]==input[i]; j++)
cnt++;if(cnt % k !=0)
hashtable[input[i]]=1;
i += cnt;}for(int i =0; i < input.size(); i++){if(hashtable[input[i]]==false&&!isout[input[i]]){
cout << input[i];
isout[input[i]]=1;}}
cout << endl;for(int i =0; i < input.size();){
cout << input[i];if(!hashtable[input[i]])
i += k;else
i +=1;}return0;}