#include <iostream>
#include <string>
#include <cmath>
#include <vector>
#include <algorithm>
#include <queue>
#include <map>
#include <utility>
#include <functional>

using namespace std;

int main() {
	int n;
	string s[10], t[10];

	cin >> n;
	for (int i = 0; i < n; ++i) {
		cin >> s[i];
	}
	for (int i = 0; i < n; ++i) {
		cin >> t[i];
	}
	for (int i = 0; i < n; ++i) {
		if (s[i] != t[i]) {
			cout << i + 1 << endl;
			cout << s[i] << endl;
			cout << t[i] << endl;
			break;
		}
	}

	return 0;
}