#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (n); i++)
#define all(x) (x).begin(), (x).end()
using ll = long long;
using pii = pair<int, int>;
using vi = vector<int>;
using vvi = vector<vector<int>>;
const ll inf = 1e9;

int main() {
  int n;
  cin>>n;
  vector<string> s(n),t(n);
  rep(i,n) cin>>s[i];
  rep(i,n) cin>>t[i];
  rep(i,n){
    if(s[i]!=t[i]){
      cout<<i<<endl;
      cout<<s[i]<<endl;
      cout<<t[i]<<endl;
      return 0;
    }
  }
  return 0;
}