Problem:
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.

Solution in C# (Mono 4.6.2.0) (judge verdict: Wrong Answer)

using System;

namespace _20190629_ABC
{
    class Program
    {
        static void Main(string[] args)
        {
            var AB = Console.ReadLine().Split(' ');
            var A = int.Parse(AB[0]);
            var B = int.Parse(AB[1]);

            // 13 <= A の場合、B
            // 6 <= A <= 12 の場合、B / 2
            // A <= 5 の場合、B = 0
            if (A <= 5)
            {
                B = 0;
            }
            else if (6 <= A || A <= 12)
            {
                B = B / 2;
            }
            Console.WriteLine(B);
        }
    }
}