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

signed main() {

int N;
cin >> N;

vector<string> A(N);
vector<string> B(N);
for( int i = 0; i < N; i++ ) cin >> A.at(i);
for( int i = 0; i < N; i++ ) cin >> B.at(i);

for( int i = 0; i < N; i++ ){
if( A.at(i) != B.at(i) ){
cout << i+1 << endl;
cout << A.at(i) << endl;
cout << B.at(i) << endl;
}
}


}