#include<iostream>
#include<set>
#include<map>
using namespace std;
    /*5
    A 3
    B 5
    C 2
    D 9
    E 4

    3 7*/
int main()
{
    map<int,string> m;
    int N;
    cin>>N;
    for(int i=0;i<N;i++)
    {
        int key;
        string value;

        cin>>value>>key;
        m[key]=value;
    }
    int start,stop;
    cin>>start>>stop;

    for(map<int,string>::iterator it = m.lower_bound(start); it !=m.upper_bound(stop);it++)
    {
        //cout<< it->first<<"\n";
        cout<<it->second<<"\n";
    }


    return 0;
}