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 JavaScript (node.js v5.12) (judge verdict: Runtime Error)

function main(input) {
  const nums = input.split(" ")
  const age = parseInt(nums[0], 10)
  const B = parseInt(nums[1], 10)
  
  if (B =< 1000 && (B % 2) === 0 && 0 =< age =< 100) {
  	if (age >= 13) { return B }
	if (6 =< age =< 12) { return B / 2 }
    if (age >= 5) { return 0 }
  }
  
}
 
console.log(main(require("fs").readFileSync("/dev/stdin", "utf8")))