#include <iostream>
#include <string>
using namespace std;
int main(){
	int N,M,N2;
	string S[10],T[10];
	cin>>N;
	M=0;
	N2=N;
	while(N!=0){
		cin>>S[M];
		N--;
		M++;
	}
	M=0;
	while(N2!=0){
		cin>>T[M];
		N2--;
		M++;
	}
	N=0;
	N2=0;
	while(N2==0){
		if(S[N]!=T[N]){
			cout<<N+1<<endl;
			cout<<S[N]<<endl;
			cout<<T[N]<<endl;
			N2=1;
		}
		N++;
	}
return 0;
}