#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cctype>
#include <algorithm>
#include <string>
#include <sstream>
#include <complex>
#include <vector>
#include <list>
#include <queue>
#include <deque>
#include <stack>
#include <map>
#include <set>
using namespace std;
typedef long long unsigned int ll;

#define EPS (1e-7)
#define INF (1e9)
#define PI (acos(-1))

int main() {
    int n;
    cin >> n;
    string s[n],t[n];
    for(int i=0;i<n;i++)
        cin>>s[i];
    for(int j=0;j<n;j++)
        cin>>t[j];
    for(int k=0;k<n;k++){
        if(s[k]!=t[k]){
            cout<<k+1<<"\n";
            cout<<s[k]<<"\n";
            cout<<t[k]<<"\n";
            break;
        }
    }
}