/* -*- coding: utf-8 -*-
 *
 * 2312.cc:  No.2312 Turtleman and Gaming Console - yukicoder
 */

#include<cstdio>
#include<algorithm>
 
using namespace std;

/* constant */

const int MAX_N = 100;

/* typedef */

/* global variables */

char a[MAX_N + 4], b[MAX_N + 4];

/* subroutines */

/* main */

int main() {
  int n;
  scanf("%d%s%s", &n, a, b);

  bool ok = false;
  for (int i = 0; ! ok && i < n; i++)
    ok = (a[i] == 'o' && b[i] == 'o');

  if (ok) puts("Lucky Turtleman");
  else puts("Unlucky Turtleman");

  return 0;
}