#include <iostream>
#include <string>

#define MAX 10

int main() {
	std::string s[MAX], t[MAX];

	int n;
	std::cin >> n;

	for (int i = 0; i < n; i++) {
		std::cin >> s[i];
	}

	for (int i = 0; i < n; i++) {
		std::cin >> t[i];
	}

	for (int i = 0; i < n; i++) {
		if (s[i] != t[i]) {
			std::cout << i + 1 << "\n" << s[i] << "\n" << t[i] << "\n";
			break;
		}
	}

	return 0;
}