Group Trip to Haroumpia

Totos and Annoula are planning a trip to Haroumpia, where the currency is the hahanolira. They have gathered some money and want to calculate how many hahanoliras they will be able to get in total.
They know that ~1~ euro is equal to ~3~ hahanoliras. They also know that the exchange office can give them a maximum of ~500~ hahanoliras.

Therefore, if their total sum in hahanoliras exceeds this limit, they can only get ~500~ hahanoliras.

The input is Totos and Annoula's money in euros.

The output is the total amount of their money in hahanoliras.

Examples

1st

Input

50
30

Output

240

2nd

Input

200
100

Output

500

Explanation of the second example:

Totos has 200 euros and Annoula has 100 euros, so together they have ~200 + 100 = 300~ euros. This corresponds to ~300 * 3 = 900~ chachanoliras. However, ~900~ is more than the ~500~ limit of the exchange office, so they can only get 500 chachanoliras.