#include <iostream> #include <vector> using namespace std; int main(void) { int n; cin >> n; vector<string> s(n), t(n); for (int i = 0; i < n; ++i) cin >> s[i]; for (int i = 0; i < n; ++i) cin >> t[i]; for (int i = 0; i < n; ++i) { if (s[i] != t[i]) { cout << i + 1 << "\n" << s[i] << "\n" << t[i] << "\n"; } } return 0; }