#include <iostream>
using namespace std;
int main(){
	int n;
	string s,t;cin>>n>>s>>t;
	for(int i = 0; n > i; i++){
		if(s[i] == t[i] && s[i] == 'o'){
			cout << "Lucky Turtleman" << endl;
			return 0;
		}
	}
	cout << "Unlucky Turtleman" << endl;
}