s = input().strip()
i = 0

# Extract N from the beginning of the string
while i < len(s) and s[i].isdigit():
    i += 1
n = int(s[:i])

# Extract A and B
a = s[i:i+n]
b = s[i+n:i+n+n]

# Check if there's any console that supports the game and is owned by Turtleman
found = False
for j in range(n):
    if a[j] == 'o' and b[j] == 'o':
        found = True
        break

print("Lucky Turtleman" if found else "Unlucky Turtleman")