#include <iostream>
using namespace std;

int main() {
    int N;
    cin >> N;
    string A, B;
    cin >> A >> B;
    int ok = 0;
    for (int i = 0; i < N; i++) ok |= A[i] == 'o' and B[i] == 'o';
    cout << (ok ? "Lucky Turtleman" : "Unlucky Turtleman") << '\n';
    return 0;
}