#include <bits/stdc++.h>

using namespace std;

int main() {
    int n;
    vector<string> v;
    
    cin >> n;
    
    string tmp;
    for (int i = 0; i < n; i++) {
        cin >> tmp;
        v.push_back(tmp);
    }
    
    for (int i = 0; i < n; i++) {
        cin >> tmp;
        if (v[i] != tmp) {
            cout << i + 1 << endl;
            cout << v[i] << endl;
            cout << tmp << endl;
        }
    }
    
    return 0;
}