s = input().strip()

# Extract N
n = 0
i = 0
while i < len(s) and s[i].isdigit():
    n = n * 10 + int(s[i])
    i += 1

if i >= len(s):
    print("Unlucky Turtleman")
    exit()

a = s[i:i + n]
b = s[i + n:i + n + n]

found = False
for i in range(n):
    if a[i] == 'o' and b[i] == 'o':
        found = True
        break

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