https://www.acmicpc.net/problem/18406
n = int(input())
length = len(str(n))
middle = length // 2
leftSum = rightSum = 0
for i in range(length):
if i < middle:
leftSum += int(str(n)[i])
else:
rightSum += int(str(n)[i])
if leftSum == rightSum:
print("LUCKY")
else:
print("READY")