A,B=[int(i)for i in input().split()]
if A>=13:
  print(B)
elif 13>A>=6:
  print(B//2)
else:
  print('0') int(i)for i in input().split() for i in input().split() i input().split() ().split () input split for i in input().split() int(i) int i A,B=[int(i)for i in input().split()] A [int(i)for i in input().split()] B if A>=13:
  print(B)
elif 13>A>=6:
  print(B//2)
else:
  print('0') A>=13 A 13 print(B) print B elif 13>A>=6:
  print(B//2) 13>A>=6 13>A 13 A 6 print(B//2) print B//2 B 2 print('0') print '0' A,B=[int(i)for i in input().split()] [int(i)for i in input().split()] A B=[int(i)for i in input().split()] [int(i)for i in input().split()] B
A,B=[int(i)for i in input().split()]
if A>=13:
  print(B)
elif 13>A>=6:
  print(B//2)
else:
  print('0')