#include <bits/stdc++.h>
#define rep(i,n) for (int i=0; i<(n); ++i)
using namespace std;
using ll=long long;
int main(){
    int n;
    cin>>n;
    vector<string>a(n),b(n);
    rep(i,n){
        cin>>a[i];
    }
    rep(i,n){
        cin>>b[i];
    }
    rep(i,n){
        if(a[i]!=b[i]){
            cout<<i+1<<endl;
            cout<<a[i]<<endl;
            cout<<b[i]<<endl;
            return 0;
        }
    }
}