#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
  #include "settings/debug.cpp"
  #define _GLIBCXX_DEBUG
#else
  #define Debug(...) void(0)
#endif
using ll = long long;
#define rep(i, n) for (int i = 0; i < (n); ++i)

int main() {
  int n;
  cin >> n;
  string s, t;
  cin >> s >> t;
  rep(i, n) {
    if (s[i] == t[i] && t[i] == 'o') {
      cout << "Lucky Turtleman" << endl;
      return 0;
    }
  }
  cout << "Unlucky Turtleman" << endl;
  return 0;
}