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

#define FOR(i,l,r) for(int i = (int) (l);i < (int) (r);i++)
template<typename T> bool chmax(T& a,const T& b){ return a < b ? (a = b,true) : false; }
template<typename T> bool chmin(T& a,const T& b){ return b < a ? (a = b,true) : false; }
typedef long long ll;

int N;
vector<string> S,T;

int main()
{
	cin >> N;
	S.assign(N,"");
	T.assign(N,"");
	FOR(i,0,N){
		cin >> S [i];
	}
	FOR(i,0,N){
		cin >> T [i];
	}

	FOR(i,0,N) if(S [i] != T [i]){
		cout << i + 1 << endl;
		cout << S [i] << endl;
		cout << T [i] << endl;
		break;
	}

	return 0;
}