#include <iostream>
#include <string>
#include <vector>
using namespace std;
int main(int argc, char* argv[])
{
	int N;
	cin>>N;
	int i;
	vector<string> S(N),T(N);
	for (i=0;i<N;i++){
		cin>>S[i];
	}
	for (i=0;i<N;i++){
		cin>>T[i];
	}
	for (i=0;i<N;i++){
		if (S[i].compare(T[i])){
			cout<<i+1<<endl;
			cout<<S[i].c_str()<<endl;
			cout<<T[i].c_str()<<endl;
			break;
		}
	}
	return 0;
}