#include<bits/stdc++.h>
using namespace std;
int main(){
    int n;
    cin>>n;
    vector<string> a;
    for(int i=0;i<n;i++){
        string st;
        cin>>st;
        a.push_back(st);
    }
    for(int i=0;i<n;i++){
        string st;
        cin>>st;
        if(st!=a[i]){
            cout<<i+1<<endl;
            cout<<a[i]<<endl;
            cout<<st<<endl;
            break;
        }
    }

    return 0;
}