#include <bits/stdc++.h>
using namespace std;
using Graph = vector<vector<int>>;
using ll = long long;
int dx[4] = {1, 0, -1, 0};
int dy[4] = {0, 1, 0, -1};
int main() {
  int N; cin >> N;
  string A; cin >> A;
  string B; cin >> B;
  bool fire = false;
  for(int i = 0; i < N; i++) {
    if(A[i] == 'o' && B[i] == 'o') {
      fire = true;
    }
  }
  if(fire) cout << "Lucky Turtleman" << endl;
  else cout << "Unlucky Turtleman" << endl;
}