text = input()
sum = 0

for i in range(len(text)):
    if text[i] == "<":
        sum = 0
        for b in range(i, len(text)):
            if ord(text[b]) in range(48, 58):
                sum += int(text[b])
            if text[b] == ">":
                print(f"Found {sum} carat diamond")
                break

if sum == 0:
    print(f"Better luck next time")