#include <bits/stdc++.h>
using namespace std;
using ll = long long;

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);

    int N;
    cin >> N;
    string S[13];
    for (int i = 0; i < N; i++) {
        cin >> S[i];
    }

    for (int i = 0; i < N; i++) {
        string T;
        cin >> T;
        if (S[i] != T) {
            cout << (i + 1) << endl;
            cout << S[i] << endl;
            cout << T << endl;
        }
    }

    return 0;
}