#include<iostream>
#include<string>
#include<string.h>
#include<algorithm>
#include<stdio.h>
#include<cmath>
#include<vector>
#include<utility>
#include<stack>
#include<queue>
#include<list>
#include<bitset>

#define FOR(i, a, b) for(int i=(a);i<=(b);i++)
#define RFOR(i, a, b) for(int i=(a);i>=(b);i--)
#define MOD 1000000007
#define INF 1000000000

using namespace std;


int main(void) {
	int n;
	char s[11][20];
	char t[11][20];

	cin >> n;
	FOR(i, 1, n) {
		cin >> s[i];
	}
	FOR(i, 1, n) {
		cin >> t[i];
	}
	FOR(i, 1, n) {
		if (strcmp(s[i], t[i]) != 0) {
			cout << s[i] << endl;
			cout << t[i] << endl;
			break;
		}
	}
	return 0;
}