#include <iostream>
using namespace std;
/*
Cum poti sa scapi de variabila 'missingDataCount'?
Te provoc sa rezolvi problema in timpul citirii celui de-al doilea sir
*/
 
const int MAX_SIZE = 100000;
 
int main() {
	int n, sentData[MAX_SIZE], recievedData[MAX_SIZE], m;
	cin >> n >> m;
	for (int i = 0; i < n; ++i) {
		cin >> sentData[i];
	}
	int missingDataCount = 0;
	for (int i = 0; i < n; ++i) {
		cin >> recievedData[i];
		if (sentData[i] != recievedData[i - missingDataCount]) {
			cout << sentData[i] << " ";
			++missingDataCount;
		}
	}
	if (!missingDataCount) {
		cout << "Nu s-au pierdut date";
	}
	return 0;
}

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