#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 aux[250];
		strcpy(aux, prenume);
		//cout << p << ' ' << x << endl;
		if (!strcmp(aux, x)) {
			existaInvitati = true;
			cout << nume << ' ';
		}
		prenume = strtok(NULL, separatori);
	}
	if (!existaInvitati) {
		cout << "NU";
	}
	return 0;
}

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

REFOIE1BUklTOyBEQU5JTEEgUFJFUEVMRUFDOyBEQU4gUE9QQTsgRURBTkEgREFOOwpEQU4=

DAN MARIS; DANILA PREPELEAC; DAN POPA; EDANA DAN;
DAN