Contest Duration: - (local time) (100 minutes) Back to Home
A - Ferris Wheel /

Time Limit: 2 sec / Memory Limit: 1024 MB

問題文

A 歳の高橋君が観覧車に乗ろうとしています。

この観覧車は、13 歳以上が乗るには B 円 (B は偶数) かかりますが、6 歳以上 12 歳以下の人はその半額で乗ることができ、 さらに 5 歳以下の人は無料で乗ることができます。

• 0 ≤ A ≤ 100
• 2 ≤ B ≤ 1000
• B は偶数

入力

A B


入力例 1

30 100


出力例 1

100


入力例 2

12 100


出力例 2

50


12 歳の高橋君は、観覧車に乗るのに 100 円の半額、すなわち 50 円かかります。

入力例 3

0 100


出力例 3

0


0 歳の高橋君は、観覧車に無料で乗ることができます。

Score : 100 points

Problem Statement

Takahashi, who is A years old, is riding a Ferris wheel.

It costs B yen (B is an even number) to ride the Ferris wheel if you are 13 years old or older, but children between 6 and 12 years old (inclusive) can ride it for half the cost, and children who are 5 years old or younger are free of charge. (Yen is the currency of Japan.)

Find the cost of the Ferris wheel for Takahashi.

Constraints

• 0 ≤ A ≤ 100
• 2 ≤ B ≤ 1000
• B is an even number.

Input

Input is given from Standard Input in the following format:

A B


Output

Print the cost of the Ferris wheel for Takahashi.

Sample Input 1

30 100


Sample Output 1

100


Takahashi is 30 years old now, and the cost of the Ferris wheel is 100 yen.

Sample Input 2

12 100


Sample Output 2

50


Takahashi is 12 years old, and the cost of the Ferris wheel is the half of 100 yen, that is, 50 yen.

Sample Input 3

0 100


Sample Output 3

0


Takahashi is 0 years old, and he can ride the Ferris wheel for free.