#include <iostream>
#include <cstring>
using namespace std;
 
int main() {
	bool existaInvitati = false;
	char listaInvitati[250], separatori[3] = "; ", x[250], *prenume, *nume;
	cin.getline(listaInvitati, 250);
	cin >> x;
	//cout << listaInvitati << endl;
	//cout << x << endl;
	prenume = strtok(listaInvitati, separatori);
	while (prenume != NULL) {
		nume = strtok(NULL, separatori);
		char p[250], n[250];
		strcpy(p, prenume);
		strcpy(n, nume);
		//cout << p << ' ' << x << endl;
		if (!strcmp(p, x)) {
			existaInvitati = true;
			cout << n << ' ';
		}
		prenume = strtok(NULL, separatori);
	}
	if (!existaInvitati) {
		cout << "NU";
	}
	return 0;
}

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