Uri 2381 - Lista de Chamada

/*                                         Codeman
                                       Arif Khan Nihar
                             Uri 2381 - Lista de Chamada

 C++11 or C++14                                */

#include<bits/stdc++.h>
 using namespace std;

int main()
{
    string s;
    int n,k;
    set < string > name;
    cin >> n >> k;
    while(n--){
        cin >> s;
        name.insert(s);
    }
    int j = 1;
    for(const auto& i:name){
        if(j == k)
            return cout << i << endl , 0;
        j++;
    }
    return 0;
}