#include<iostream>
using namespace std;
struct student{
	char name[20];
	int high;
}s[25];
int main(){
	int n,m;
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>s[i].name>>s[i].high;
	}
	cin>>m;
	for(int i=1;i<=n;i++){
		if(s[i].high<m)
		cout<<s[i].name<<endl;
	}
	return 0;
}