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 Python (3.4.3) (judge verdict: Wrong Answer)

# -*- coding: utf-8 -*-
import sys;
sys.setrecursionlimit(20000) # 再起呼び出しの最大数をセット

# 整数の入力
#n = int(input())

# スペース区切りの整数の入力
a = [x for x in map(int, input().split())]
#n, y = map(int, input().split())

# 改行区切りの整数の入力
#a = []
#for x in range(n):
#  a.append(int(input()))

# 文字列の入力
#s = input()

# 出力
#print("{} {}".format(a+b+c, s))
#a.sort()
#print(set(a), file=sys.stderr)
#print(len(set(a)))

surfixes = ("dream", "dreamer", "erase", "eraser")

def doit(l):
  #print(s, file=sys.stderr)
  if l == 0:
    return True;
  for x in surfixes:
    if s[:l].endswith(x):
#      return doit(l-len(x))
      if doit(l-len(x)):
        return True
  return False

try:
  if a[0] > 12:
    print("" + [a1])
  elif a[0] > 5:
    print("" + ([a1]/2))
  else:
    print("0")
except Exception as e:
  print(e, file=sys.stderr)